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-*- coding: utf-8 -*-
Changes with Apache 2.5.1
*) core/mod_proxy/mod_ssl:
Adding `outgoing` flag to conn_rec, indicating a connection is
initiated by the server to somewhere, in contrast to incoming
connections from clients.
Adding 'ap_ssl_bind_outgoing()` function that marks a connection
as outgoing and is used by mod_proxy instead of the previous
optional function `ssl_engine_set`. This enables other SSL
module to secure proxy connections.
The optional functions `ssl_engine_set`, `ssl_engine_disable` and
`ssl_proxy_enable` are now provided by the core to have backward
compatibility with non-httpd modules that might use them. mod_ssl
itself no longer registers these functions, but keeps them in its
header for backward compatibility.
The core provided optional function wrap any registered function
like it was done for `ssl_is_ssl`.
[Stefan Eissing]
*) mod_h2: Don't strip headers from 304 responses. [Yann Ylavic]
*) mod_proxy: Fix possible reuse/merging of Proxy(Pass)Match worker instances
with others when their URLs contain a '$' substitution. PR 65419.
[Yann Ylavic]
*) mpm_prefork: Block signals for child_init hooks to prevent potential
threads created from there to catch MPM's signals.
[Ruediger Pluem, Yann Ylavic]
*) mod_ssl: tighten the handling of ALPN for outgoing (proxy)
connections. If ALPN protocols are provided and sent to the
remote server, the received protocol selected is inspected
and checked for a match. Without match, the peer handshake
fails.
An exception is the proposal of "http/1.1" where it is
accepted if the remote server did not answer ALPN with
a selected protocol. This accomodates for hosts that do
not observe/support ALPN and speak http/1.x be default.
* mod_log_config/mod_ssl: moved the log_handlers registered by mod_ssl
into mod_log_config itself. These now use the global `ap_ssl_var_lookup()`
functions and work for all running SSL modules.
The dependency from mod_ssl to mod_log_config and its header is removed.
mod_ssl now provides the content of "{errstr}c" as variable "SSL_CLIENT_VERIFY_ERRSTR".
This change should be fully compatible to all deployed configurations.
[Stefan Eissing]
*) dbm: Split the loading of a dbm driver from the opening of a dbm file. When
an attempt to load a dbm driver fails, log clearly which driver triggered
the error (not "default"), and what the error was. [Graham Leggett]
*) core: Fix a regression that stripped the ETag header from 304 responses.
PR 61820 [Ruediger Pluem, Roy T. Fielding]
*) core/mod_ssl/mod_md: adding OCSP response provisioning as core feature. This
allows modules to access and provide OCSP response data without being tied
of each other. The data is exchanged in standard, portable formats (PEM encoded
certificates and DER encoded responses), so that the actual SSL/crypto
implementations used by the modules are independant of each other.
Registration and retrieval happen in the context of a server (server_rec)
which modules may use to decide if they are configured for this or not.
The area of changes:
1. core: defines 2 functions in include/http_ssl.h, so that modules may
register a certificate, together with its issuer certificate for OCSP
response provisioning and ask for current response data (DER bytes) later.
Also, 2 hooks are defined that allow modules to implement this OCSP
provisioning.
2. mod_ssl uses the new functions, in addition to what it did already, to
register its certificates this way. If no one is interested in providing
OCSP, it falls back to its own (if configured) stapling implementation.
3. mod_md registers itself at the core hooks for OCSP provisioning. Depending
on configuration, it will accept registrations of its own certificates only,
all certificates or none.
[Stefan Eissing]
*) mod_proxy_wstunnel: Add ProxyWebsocketFallbackToProxyHttp to opt-out the
fallback to mod_proxy_http for WebSocket upgrade and tunneling.
[Yann Ylavic]
*) mod_proxy_hcheck: Honor worker timeout settings. [Yann Ylavic]
*) mod_lua: Add support to Lua 5.4 [Joe Orton, Giovanni Bechis, Ruediger Pluem]
*) mod_md: Tolerate a missing "revokeCert" or "keyChange" resource.
[Fraser Tweedale <ftweedal redhat.com>]
*) mod_ssl: Add SSL_{CLIENT,SERVER}_B64CERT variables with
base64-encoded DER certificates. Add SSL_CLIENT_B64CERT_CHAIN_n
equivalents for SSL_CLIENT_CERT_CHAIN_n, and new
"ExportBase64CertData" argument for SSLOptions. PR 65169.
[Joe Orton]
*) mod_proxy_balancer: Include nonce in XML output. PR 63074.
Federico Mennite <federico.mennite lifeware.ch>
*) mod_http2: Fixed a race condition that could lead to streams being
aborted (RST to the client), although a response had been produced.
[Stefan Eissing]
*) mod_unique_id: Fix potential duplicated ID generation under heavy load.
PR 65159
[Jonas Müntener <jonas.muentener ergon.ch>, Christophe Jaillet]
*) core: provide ap_ssl_* functions in new http_ssl.h header file.
[Stefan Eissing]
*) mod_socache_shmcb: Avoid double SHM cleanup and possible crash on
restart/stop. PR 59798. [Yann Ylavic]
*) mod_md: v2.4.0 with improvements and bugfixes
- MDPrivateKeys allows the specification of several types. Beside "RSA" plus
optional key lengths elliptic curves can be configured. This means you can
have multiple certificates for a Managed Domain with different key types.
With ```MDPrivateKeys secp384r1 rsa2048``` you get one ECDSA and one RSA
certificate and all modern client will use the shorter ECDSA, while older
client will get the RSA certificate.
Many thanks to @tlhackque who pushed and helped on this.
- Support added for MDomains consisting of a wildcard. Configuring
```MDomain *.host.net``` will match all virtual hosts matching that pattern
and obtain one certificate for it (assuming you have 'dns-01' challenge
support configured). Addresses #239.
- Removed support for ACMEv1 servers. The only known installation used to
be Let's Encrypt which has disabled that version more than a year ago for
new accounts.
- Andreas Ulm (<https://github.com/root360-AndreasUlm>) implemented the
```renewing``` call to ```MDMessageCmd``` that can deny a certificate
renewal attempt. This is useful in clustered installations, as
discussed in #233).
- New event ```challenge-setup:<type>:<domain>```, triggered when the
challenge data for a domain has been created. This is invoked before the
ACME server is told to check for it. The type is one of the ACME challenge
types. This is invoked for every DNS name in a MDomain.
- The max delay for retries has been raised to daily (this is like all
retries jittered somewhat to avoid repeats at fixed time of day).
- Certain error codes reported by the ACME server that indicate a problem
with the configured data now immediately switch to daily retries. For
example: if the ACME server rejects a contact email or a domain name,
frequent retries will most likely not solve the problem. But daily retries
still make sense as there might be an error at the server and un-supervised
certificate renewal is the goal. Refs #222.
- Test case and work around for domain names > 64 octets. Fixes #227.
When the first DNS name of an MD is longer than 63 octets, the certificate
request will not contain a CN field, but leave it up to the CA to choose one.
Currently, Lets Encrypt looks for a shorter name in the SAN list given and
fails the request if none is found. But it is really up to the CA (and what
browsers/libs accept here) and may change over the years. That is why
the decision is best made at the CA.
- Retry delays now have a random +/-[0-50]% modification applied to let
retries from several servers spread out more, should they have been
restarted at the same time of day.
- Fixed several places where the 'badNonce' return code from an ACME server
was not handled correctly. The test server 'pebble' simulates this behaviour
by default and helps nicely in verifying this behaviour. Thanks, pebble!
- Set the default `MDActivationDelay` to 0. This was confusing to users that
new certificates were deemed not usably before a day of delay. When clocks are
correct, using a new certificate right away should not pose a problem.
- When handling ACME authorization resources, the module no longer requires
the server to return a "Location" header, as was necessary in ACMEv1.
Fixes #216.
- Fixed a theoretical uninitialized read when testing for JSON error responses
from the ACME CA. Reported at <https://bz.apache.org/bugzilla/show_bug.cgi?id=64297>.
- ACME problem reports from CAs that include parameters in the Content-Type
header are handled correctly. (Previously, the problem text would not be
reported and retries could exist CA limits.)
- Account Update transactions to V2 CAs now use the correct POST-AS-GET method.
Previously, an empty JSON object was sent - which apparently LE accepted,
but others reject.
- MDCertificateFile and MDCertificateKeyFile can now be specified several
times to add multiple, static certificates to a MDomain.
[Stefan Eissing, @tlhackque, Andreas Ulm]
*) mod_session: Improve session parsing. [Yann Yalvic]
*) mod_proxy_hcheck: Don't pile up health checks if the previous one did
not finish before hcinterval. PR 63010. [Yann Ylavic]
*) core: Adding SSL related inquiry functions to the server API.
These function are always available, even when no module providing
SSL is loaded. They provide their own "shadowing" implementation for
the optional functions of similar name that mod_ssl and impersonators
of mod_ssl provide.
This enables loading of several SSL providing modules when all but
one of them registers itself into the new hooks. Two old-style SSL
modules will not work, as they replace the others optional functions
with their own.
Modules using the old-style optional functions will continue to work
as core supplies its own versions of those.
The following has been added so far:
- ap_ssl_conn_is_ssl() to query if a connection is using SSL.
- ap_ssl_var_lookup() to query SSL related variables for a
server/connection/request.
- Hooks for 'ssl_conn_is_ssl' and 'ssl_var_lookup' where modules
providing SSL can install their own value supplying functions.
- ap_ssl_add_cert_files() to enable other modules like mod_md to provide
certificate and keys for an SSL module like mod_ssl.
- ap_ssl_add_fallback_cert_files() to enable other modules like mod_md to
provide a fallback certificate in case no 'proper' certificate is
available for an SSL module like mod_ssl.
- ap_ssl_answer_challenge() to enable other modules like mod_md to
provide a certificate as used in the RFC 8555 'tls-alpn-01' challenge
for the ACME protocol for an SSL module like mod_ssl. The function
and its hook provide PEM encoded data instead of file names.
- Hooks for 'ssl_add_cert_files', 'ssl_add_fallback_cert_files' and
'ssl_answer_challenge' where modules like mod_md can provide providers
to the above mentioned functions.
[Stefan Eissing]
*) mod_http2: new option 'H2OutputBuffering on/off' which controls the
buffering of stream output. The default is on, which is the behaviour of
previous mod-h2 versions. When off, all bytes are made available immediately
to the main connection for sending them out to the client. This fixes interop
issues with certain flavours of gRPC. [Stefan Eissing]
*) mod_authnz_ldap: Prevent authentications with empty passwords for the
initial bind to fail with status 500. [Ruediger Pluem]
*) mod_http2: Fixed reporting of transferred bytes for mod_logio for
modifiers %O (and %S) to report the number of transferred header and
body lengths. This is still only an approximation of the bytes on the
connection. The data is subject to header compression and h2 framing
afterwards. [Stefan Eissing]
*) mod_cgid: Intercept and log stderr output correctly on Unix systems
supporting fd passing. PR 54221. [Joe Orton]
*) mod_auth_digest: Fast validation of the nonce's base64 to fail early if
the format can't match anyway. [Yann Ylavic]
*) mod_xml2enc: Update check to match MIME types matching
"+xml" rather than anything containing "xml", avoiding
corruption of Microsoft OOXML formats. PR 64339.
[Joseph Heenan <joseph.heenan fintechlabs.io>]
*) mod_proxy_wstunnel: Leave Upgrade requests handling to mod_proxy_http,
allowing for (non-)Upgrade negotiation with the origin server.
[Yann Ylavic]
*) mod_ssl: SSLProxyMachineCertificateFile/Path may reference files
which include CA certificates; those CA certs are treated as if
configured with SSLProxyMachineCertificateChainFile. [Joe Orton]
*) mpm_event: don't reset connections after lingering close, restoring prior
to 2.4.28 behaviour. [Yann Ylavic]
*) mod_dav_fs: Improve logging output when failing to open files for
writing. PR 64413. [Bingyu Shen <ahshenbingyu gmail.com>]
*) mod_proxy: Add optional third argument for ProxyRemote, which
configures Basic authentication credentials to pass to the remote
proxy. PR 37355. [Joe Orton]
*) mod_proxy_http: Fix 100-continue deadlock for spooled request bodies,
leading to Request Timeout (408). PR 63855. [Yann Ylavic]
*) http: Allow unknown response status' lines returned in the form of
"HTTP/x.x xxx Status xxx". [Yann Ylavic]
*) mod_proxy_fcgi: Honor "SetEnv proxy-sendcl" to forward a chunked
Transfer-Encoding from the client, spooling the request body when needed
to provide a Content-Length to the backend. PR 57087. [Yann Ylavic]
*) mpm_event: kill connections in keepalive state only when there is no more
workers available, not when the maximum number of connections is reached,
restoring prior to 2.4.30 behaviour. [Yann Ylavic]
*) mod_allowmethods: Allow methods to be added/removed with +/- prefix. PR64785.
[Marcel Montes <spiceman gmail.com>]
*) mod_unique_id: Use base64url encoding for UNIQUE_ID variable,
avoiding the use of '@'. PR 57044.
[Michael Kaufmann <apache-bugzilla michael-kaufmann.ch>]
*) core: add ReadBufferSize, FlushMaxThreshold and FlushMaxPipelined
directives. [Yann Ylavic]
*) mod_md: lowered the required minimal libcurl version from 7.50 to 7.29
as proposed by <alexander.gerasimov@codeit.pro>.
*) mod_http2: Log requests and sent the configured error response in case of
early detected errors like too many or too long headers.
[Ruediger Pluem, Stefan Eissing]
*) mod_proxy_uwsgi: Fix a crash when sending environment variables with no
value. PR 64598 [Ruediger Pluem]
*) mod_cgi/mod_cgid: Avoid a second read from a CGI script after a
timeout, which effectively doubled the configured timeout setting.
PR 64709. [Joe Orton]
*) core: handle headers when replying a 304 following RFC7234.
[Giovanni Bechis]
*) mod_http2: remove support for abandoned http-wg draft
<https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/>.
[Stefan Eissing]
*) mod_proxy_uwsgi: Error out on HTTP header larger than 16K (hard
protocol limit). [Yann Ylavic]
*) mod_dav: Some DAV extensions, like CalDAV, specify both document
elements and property elements that need to be taken into account
when generating a property. The document element and property element
are made available in the dav_liveprop_elem structure under the
DAV_PROP_ELEMENT key in the resource pool. [Graham Leggett]
*) mod_dav: Add utility functions dav_validate_root_ns(),
dav_find_child_ns(), dav_find_next_ns(), dav_find_attr_ns() and
dav_find_attr() so that other modules get to play too.
[Graham Leggett]
*) mod_http2:
Fixes <https://github.com/icing/mod_h2/issues/200>:
"LimitRequestFields 0" now disables the limit, as documented.
Fixes <https://github.com/icing/mod_h2/issues/201>:
Do not count repeated headers with same name against the field
count limit. The are merged internally, as if sent in a single HTTP/1 line.
[Stefan Eissing]
*) mod_http2: Avoid segfaults in case of handling certain responses for
already aborted connections. [Stefan Eissing, Ruediger Pluem]
*) core: Remove support for the Content-MD5 header, removed in RFC7231.
Functions ap_md5digest() and ap_md5contextTo64() removed, and
ContentDigest directive. [Graham Leggett]
*) mod_dav: Allow other DAV modules to use dav_get_resource().
[Graham Leggett]
*) mpm_common: remove ap_mpm_unregister_poll_callback() and
mpm_unregister_poll_callback hook. [Yann Ylavic]
*) mod_proxy_http: add asynchronous handling of Upgrade(d) protocols,
where idle connections are returned to the MPM and rescheduled on
another thread when ready. [Yann Ylavic]
*) mod_dav: Add method_precondition hook. WebDAV extensions define
conditions that must exist before a WebDAV method can be executed.
This hook allows a WebDAV extension to verify these preconditions.
[Graham Leggett]
*) Add hooks deliver_report and gather_reports to mod_dav.h. Allows other
modules apart from versioning implementations to handle the REPORT method.
[Graham Leggett]
*) Add dav_get_provider(), dav_open_lockdb() and dav_close_lockdb() mod_dav.h.
[Graham Leggett]
*) "[mod_dav_fs etag handling] should really honor the FileETag setting".
- It now does.
- Add "Digest" to FileETag directive, allowing a strong ETag to be
generated using a file digest.
- Add ap_make_etag_ex() and ap_set_etag_fd() to allow full control over
ETag generation.
- Add concept of "binary notes" to request_rec, allowing packed bit flags
to be added to a request.
- First binary note - AP_REQUEST_STRONG_ETAG - allows modules to force
the ETag to a strong ETag to comply with RFC requirements, such as those
mandated by various WebDAV extensions.
[Graham Leggett]
*) mod_ssl: Fix a race condition and possible crash when using a proxy client
certificate (SSLProxyMachineCertificateFile).
[Armin Abfalterer <a.abfalterer gmail.com>]
*) mod_proxy: recognize parameters from ProxyPassMatch workers with dollar
substitution, such that they apply to the backend connection. Note that
connection reuse is disabled by default to avoid compatibility issues.
[Takashi Sato, Jan Kaluza, Eric Covener, Yann Ylavic, Jean-Frederic Clere]
*) mod_proxy_http: remove proxy-sendchunked and proxy-sendchunks
handling, the default behaviour being now to stream the request body
using Content-Length when the length is known and fall back to chunked
Transfer-Encoding otherwise (unless proxy-sendcl is set thus requiring
that the request body be spooled to memory or filesystem). [Yann Ylavic]
*) mod_ldap: Avoid performance overhead of APR-util rebind cache for
OpenLDAP 2.2+. PR 64414. [Joe Orton]
*) mod_proxy_http: flush spooled request body in one go to avoid
leaking (or long lived) temporary file. PR 64452. [Yann Ylavic]
*) mod_proxy_fcgi: ProxyFCGISetEnvIf unsets variables when expression
evaluates to false. PR64365. [Michael König <mail ikoenig.net>]
*) mod_proxy_http: handle Upgrade request, 101 (Switching Protocol) response
and switched protocol forwarding. [Yann Ylavic]
*) mod_ssl: The "ssl_var_lookup" optional function API now takes a
const char *name argument and returns a const char * string
value. The pool argument must now be non-NULL. [Joe Orton]
*) mod_ssl: With OpenSSL 1.1.1 and later, SSLRandomSeed is now
ignored. OpenSSL must be configured with a suitable entropy
source, or mod_ssl will fail to start up. [Joe Orton]
*) mod_ssl: With OpenSSL 1.1.1 and later, client-initiated
renegotiation in TLSv1.2 and earlier is blocked at SSL library
level (with a TLS warning alert sent), rather than by aborting
the connection inside mod_ssl. [Joe Orton]
*) core: Add optional "options=" argument to Listen. Supported
keywords are "freebind", "reuseport" and "v6only". PR 61865.
[Jan Kaluza, Lubos Uhliarik <luhliari redhat.com>, Joe Orton]
*) config: Allow for environment variable substitution with default value,
for when the variable is not defined, using format ${VAR?=default value}.
[Yann Ylavic]
*) htcacheclean: Empty directories in CacheRoot are still present even after
using "-t". PR64313 [Petros Marios Prokopiou <pprokopi redhat.com>,
Ruediger Pluem, Jean-Frederic Clere]
*) mod_reqtimeout: Cannot override default Virtualhost's mod_reqtimeout.
PR64295 [Jean-Frederic Clere]
*) mod_proxy: Allow ProxyErrorOverride to be restricted to specific status
codes. PR63628. [Martin Drößler <mail martindroessler.de>]
*) configtest: Issue a warning for non-existent directories in <Directory> config
sections. PR63079. [Stephane Blondon <stephane.blondon gmail.com>].
*) mod_proxy_http: Fix random memory-corruption in case of an error while
reading a response from the backend.
PR 64234 [Ruediger Pluem, Barnim Dzwillo <dzwillo@strato.de>]
*) core: Use a temporary file when writing the pid file, avoiding
startup failure if an empty pidfile is left over from a
previous crashed or aborted invocation of httpd. PR 63140.
[Nicolas Carrier <carrier.nicolas0 gmail.com>, Joe Orton]
*) mod_http2: Fixes issue where mod_unique_id would generate non-unique request
identifier under load, see <https://github.com/icing/mod_h2/issues/195>.
[Michael Kaufmann, Stefan Eissing]
*) mod_session_cookie: Add SessionCookieMaxAge to allow the mod_session
cookie to be sent as a "session cookie" with no expiration even when the
SessionMaxAge will be enforced on the server. PR56040 [Eric Covener]
*) mod_session: Fix an issue that blocked new sessions being created after
session expiration or other session errors. PR56052 [Eric Covener]
*) mod_proxy_hcheck: Allow healthcheck expressions to use %{Content-Type}.
PR64140. [Renier Velazco <renier.velazco upr.edu>]
*) mod_ssl: Fix memory leak of OCSP stapling response. [Yann Ylavic]
*) mod_authz_groupfile: Drop AH01666 from loglevel "error" to "info".
PR64172.
*) mod_usertrack: Add CookieSameSite, CookieHTTPOnly, and CookieSecure
to allow customization of the usertrack cookie. PR64077.
[Prashant Keshvani <prashant2400 gmail.com>, Eric Covener]
*) mpm_event: avoid possible KeepAlveTimeout off by -100 ms.
[Eric Covener, Yann Ylavic]
*) mod_md:
- Prefer MDContactEmail directive to ServerAdmin for registration. New directive
thanks to Timothe Litt (@tlhackque).
- protocol check for pre-configured "tls-alpn-01" challenge has been improved. It will now
check all matching virtual hosts for protocol support. Thanks to @mkauf.
- Corrected a check when OCSP stapling was configured for hosts
where the responsible MDomain is not clear, by Michal Karm Babacek (@Karm).
- Softening the restrictions where mod_md configuration directives may appear. This should
allow for use in <If> and <Macro> sections. If all possible variations lead to the configuration
you wanted in the first place, is another matter.
[Michael Kaufmann <mail michael-kaufmann.ch>, Timothe Litt (@tlhackque),
Michal Karm Babacek (@Karm), Stefan Eissing (@icing)]
*) core: ap_method_mask_t type added for method bitmasks, changed
from apr_int64_t and used for the method_mask field in
ap_method_list_t, AP_METHOD_BIT, allowed field of request_rec,
limited field of cmd_parms. PR 63885. [Joe Orton]
*) mod_ssl: Do not keep connections to OCSP responders alive when doing
OCSP requests. PR 64135. [Ruediger Pluem]
*) mod_ssl: Disable client verification on ACME ALPN challenges. Fixes github
issue mod_md#172 (https://github.com/icing/mod_md/issues/172).
[Michael Kaufmann <mail michael-kaufmann.ch>, Stefan Eissing]
*) mod_rewrite: Extend the [CO] (cookie) flag of RewriteRule to accept a
SameSite attribute. [Eric Covener]
*) Update DOCTYPE tags in server-generated HTML. PR62989.
[Andra Farkas <deepbluemistake gmail.com>, Giovanni Bechis <giovanni paclan.it>]
*) mod_setenvif: Passing an env-variable parameter of "--early" in non-perdir
context runs directives from this module before `RequestHeader ... early`
are evaluated. This allows results of SetEnvIf conditionals to be used
to modify request headers in early mode. [Eric Covener]
*) config: Speed up graceful restarts by using pre-hashed command table. PR 64066.
[Giovanni Bechis <giovanni paclan.it>, Jim Jagielski]
*) mod_lua: Add r:headers_in_table, r:headers_out_table, r:err_headers_out_table,
r:notes_table, r:subprocess_env_table as read-only native table alternatives
that can be iterated over. [Eric Covener]
*) configure: Add manualdir and proxycachedir to the APR_ENABLE_LAYOUT macro call.
[Graham Leggett]
*) Add support for cross compiling to apxs. If apxs is being executed from somewhere
other than its target location, add that prefix to includes and library directories.
Without this, apxs would fail to find config_vars.mk and exit. [Graham Leggett]
*) Add a config layout for OpenWRT. [Graham Leggett]
*) mod_http2: Fixed rare cases where a h2 worker could deadlock the main connection.
[Yann Ylavic, Stefan Eissing]
*) mod_lua: Accept nil assignments to the exposed tables (r.subprocess_env,
r.headers_out, etc) to remove the key from the table. PR63971.
[Eric Covener]
*) mod_http2: Fixed interaction with mod_reqtimeout. A loaded mod_http2 was disabling the
ssl handshake timeouts. Also, fixed a mistake of the last version that made `H2Direct`
always `on`, regardless of configuration. Found and reported by
<Armin.Abfalterer@united-security-providers.ch> and
<Marcial.Rion@united-security-providers.ch>. [Stefan Eissing]
*) mod_http2: Multiple field length violations in the same request no longer cause
several log entries to be written. [@mkauf]
*) mod_md: v2.2.4 from github, Fixes a compile time issue with OpenSSL 1.0.2 in
the new OCSP code. Skips port checks for domain server_rec selection when "tls-alpn-01"
is configured explicitly (related to #133). [@mkauf, Stefan Eissing]
*) mod_ssl: Support logging private key material for use with
wireshark via log file given by SSLKEYLOGFILE environment
variable. Requires OpenSSL 1.1.1. PR 63391. [Joe Orton]
*) mod_proxy: Improve tunneling loop to support half closed connections and
pending data draining (for protocols like rsync). PR 61616. [Yann Ylavic]
*) mod_proxy: Add proxy check_trans hook for proxy modules to possibly
decline request handling at early stage. [Yann Ylavic]
*) mod_proxy: Put mod_proxy_{connect,wstunnel} tunneling code in common in
proxy_util. [Yann Ylavic]
*) mod_proxy_http: Fix the forwarding of requests with content body when a
balancer member is unavailable; the retry on the next member was issued
with an empty body (regression introduced in 2.4.41). [Yann Ylavic]
*) mod_ssl: negotiate the TLS protocol version per name based vhost
configuration, when linked with OpenSSL-1.1.1 or later. The base vhost's
SSLProtocol (from the first vhost declared on the IP:port) is now only
relevant if no SSLProtocol is declared for the vhost or globally,
otherwise the vhost or global value apply. [Yann Ylavic]
*) mod_proxy_http: Fix 100-continue deadlock for spooled request bodies,
leading to Request Timeout (408). PR 63855. [Yann Ylavic]
*) mod_deflate, mod_brotli: honor "Accept-Encoding: foo;q=0" as per RFC 7231; which
means 'foo' is "not acceptable". PR 58158 [Chistophe Jaillet]
*) mod_proxy: Fix crash by resolving pool concurrency problems. PR 63503
[Ruediger Pluem, Eric Covener]
*) core: On Windows, fix a start-up crash if <IfFile ...> is used with a path that is not
valid (For example, testing for a file on a flash drive that is not mounted)
[Christophe Jaillet]
*) mod_proxy_balancer: Fix case-sensitive referer check related to CSRF/XSS
protection. PR63688. [Armin Abfalterer <a.abfalterer gmail.com>]
*) mod_authn_socache: Increase the maximum length of strings that can be cached by
the module from 100 to 256. PR 62149 [<thorsten.meinl knime.com>]
*) mod_ssl: reverting a 2.4.40 change where a superfluous SSLCertificateChainFile configuration
for a domain managed by mod_md caused a startup error. This happened when mod_md installed
its fallback certificate, before it got the first real certificate from Lets Encrypt.
[Stefan Eissing]
*) core, mod_rewrite: Set PCRE_DOTALL by default. Revert via
RegexDefaultOptions -DOTALL [Yann Ylavic]
*) core: Remove request details from built-in error documents [Eric Covener]
*) mod_http2: core setting "LimitRequestFieldSize" is not additionally checked on
merged header fields, just as HTTP/1.1 does. [Stefan Eissing, Michael Kaufmann]
*) mod_http2: fixed a bug that prevented proper stream cleanup when connection
throttling was in place. Stream resets by clients on streams initiated by them
are counted as possible trigger for throttling. [Stefan Eissing]
*) mod_http2/mpm_event: Fixes the behaviour when a HTTP/2 connection has nothing
more to write with streams ongoing (flow control block). The timeout waiting
for the client to send WINODW_UPDATE was incorrectly KeepAliveTimeout and not
Timeout as it should be. Fixes PR 63534. [Yann Ylavic, Stefan Eissing]
*) mod_ssl/mod_md: reversing dependency by letting mod_ssl offer hooks for
adding certificates and keys to a virtual host. An additional hook allows
answering special TLS connections as used in ACME challenges.
Adding 2 new hooks for init/get of OCSP stapling status information when
other modules want to provide those. Falls back to own implementation with
same behaviour as before.
[Stefan Eissing]
*) mod_ssl: use OPENSSL_init_ssl() to initialise OpenSSL on versions 1.1+.
[Graham Leggett]
*) mod_proxy_http2: adding support for handling trailers in both directions. PR 63502.
[Stefan Eissing]
*) mod_reqtimeout: Fix default rates missing (not applied) in 2.4.39.
PR 63325. [Yann Ylavic]
*) mod_ldap: Avoid potential crashes in util_ldap_cache_module_kill() or other
LDAP related functions during graceful restart of a busy server. PR63305.
[Martin Fúsek <mfusek newps.cz>]
*) mod_cache: Fix parsing of quoted Cache-Control token arguments.
PR 63288. [Yann Ylavic]
*) mod_md: Store permissions are enforced on file creation, enforcing restrictions in
spite of umask. Fixes <https://github.com/icing/mod_md/issues/117>. [Stefan Eissing]
*) mod_ssl: Correctly restore SSL verify state after TLSv1.3 PHA failure.
[Michael Kaufmann <mail michael-kaufmann.ch>]
*) Merge consecutive slashes in URL's. Opt-out with `MergeSlashes OFF`.
[Eric Covener]
*) mod_proxy/ssl: Cleanup per-request SSL configuration anytime a backend
connection is recycled/reused to avoid a possible crash with some SSLProxy
configurations in <Location> or <Proxy> context. PR 63256. [Yann Ylavic]
*) mod_mime: Add `MimeOptions` directive to allow Content-Type or all metadata
detection to use only the last (right-most) file extension or to be
disabled per-dir. [Eric Covener]
*) MPMs unix: bind the bucket number of each child to its slot number, for a
more efficient per bucket maintenance. [Yann Ylavic]
*) http: Fix possible empty response with mod_ratelimit for HEAD requests.
PR 63192. [Yann Ylavic]
*) mod_cache_socache: Avoid reallocations and be safe with outgoing data
lifetime. [Yann Ylavic]
*) mod_reqtimeout: Allow to configure (TLS-)handshake timeouts.
PR 61310. [Yann Ylavic]
*) mod_auth_digest: Fix a race condition. Authentication with valid credentials could be
refused in case of concurrent accesses from different users.
PR 63124 [Simon Kappel <simon.kappel axis.com>]
*) mod_ssl: Don't unset FIPS mode on restart unless it's forced by
configuration (SSLFIPS on) and not active by default in OpenSSL.
PR 63136. [Yann Ylavic]
*) mod_ssl: give mod_md the chance to override certificate after ALPN protocol
negotiation. [Stefan Eissing]
*) mod_proxy_wstunnel: Fix websocket proxy over UDS.
PR 62932 <pavel dcmsys.com>
*) mod_negociation: LanguagePriority should be case-insensitive in order to
match AddLanguage behavior. PR 39730 [Christophe Jaillet]
*) mod_session: Always decode session attributes early. [Hank Ibell]
*) core: Incorrect values for environment variables are substituted when
multiple environment variables are specified in a directive. [Hank Ibell]
*) core: Split out the ability to parse wildcard files and directories
from the Include/IncludeOptional directives into a generic set of
functions ap_dir_nofnmatch() and ap_dir_fnmatch(). [Graham Leggett]
*) mod_ssl: Fix mod_authz provider for "require ssl" directive to check correctly
on HTTP/2 connections. Fixes PR 62654. [Stefan Eissing]
*) mod_ssl: clear *SSL errors before loading certificates and checking
afterwards. Otherwise errors are reported when other SSL using modules
are in play. Fixes PR 62880. [Michael Kaufmann]
*) core: Ensure that aborted connections are logged as such. PR 62823
[Arnaud Grandville <contact@grandville.net>]
*) mpm_event: Stop issuing AH00484 "server reached MaxRequestWorkers..." when
there are still idle threads available. When there are less idle threads than
MinSpareThreads, issue new one-time message AH10159. Matches worker MPM.
[Eric Covener]
*) mod_proxy_scgi, mod_proxy_uwsgi: improve error handling when sending the
body of the response. [Jim Jagielski]
*) mod_session_cookie: avoid duplicate Set-Cookie header in the response.
[Emmanuel Dreyfus <manu@netbsd.org>, Luca Toscano]
*) mod_dav_fs: Set a default DAVLockDB within the state directory.
[Joe Orton]
*) core: Add DefaultStateDir and layout-specific state directory
created at "make install". [Joe Orton]
*) ab: Add client certificate support. [Graham Leggett]
*) mod_proxy_hcheck: Fix issues with TCP health checks. PR 61499
[Dominik Stillhard <dominik.stillhard united-security-providers.ch>]
*) MPMs: Initialize all runtime/asynchronous objects on a dedicated pool and
before signals handling to avoid lifetime issues on restart or shutdown.
PR 62658. [Yann Ylavic]
*) core: Add StrictHostCheck to allow unconfigured hostnames to be
rejected. [Eric Covener]
*) mod_status: Cumulate CPU time of exited child processes in the
"cu" and "cs" values. Add CPU time of the parent process to the
"c" and "s" values.
[Rainer Jung]
*) mod_status: Add cumulated response duration time in milliseconds.
[Rainer Jung]
*) mod_status: Complete the data shown for async MPMs in "auto" mode.
Added number of processes, number of stopping processes and number
of busy and idle workers. [Rainer Jung]
*) mod_proxy: Improve the balancer member data shown in mod_status when
"ProxyStatus" is "On": add "busy" count and show byte counts in auto
mode always in units of kilobytes. [Rainer Jung]
*) mod_proxy: If ProxyPassReverse is used for reverse mapping of relative
redirects, subsequent ProxyPassReverse statements, whether they are
relative or absolute, may fail. PR 60408. [Peter Haworth <pmh1wheel gmail.com>]
*) mod_ratelimit: Don't interfere with "chunked" encoding, fixing regression
introduced in 2.4.34. PR 62568. [Yann Ylavic]
*) mod_proxy_http: forward 100-continue, and minimize race conditions when
reusing backend connections. PR 60330. [Yann Ylavic, Jean-Frederic Clere]
*) mod_proxy: Remove load order and link dependency between mod_lbmethod_*
modules and mod_proxy. PR 62557. [Ruediger Pluem, William Rowe]
*) mod_md: more robust handling of http-01 challenges and hands-off when module
should not be involved, e.g. challenge setup by another ACME client. [Stefan Eissing]
*) ru, zh-cn and zh-tw translations of errordocs have been added.
Contributed by Alexander Gaganashvili and CodeingBoy
*) mod_userdir: If several directories are given in a UserDir directive, only files
in the first existing one are checked. If the file is not found there, the
other possible directories are not checked. The doc clearly states that they
will be checked one by one, until a match is found or an external redirect is
performed. PR 59636.
[Christophe Jaillet]
*) mod_rewrite: Only create the global mutex used by "RewriteMap prg:" when
this type of map is present in the configuration. PR62311.
[Hank Ibell <hwibell gmail.com>]
*) mod_ldap: Abort on LDAP locking errors. [Eric Covener]
*) mod_ssl: Support loading certificates and private keys from the
PKCS#11 OpenSSL engine. [Anderson Sasaki <ansasaki redhat.com>,
Joe Orton]
*) http: LimitRequestBody applies to proxied requests. [Yann Ylavic]
*) mod_logio: Add LogIOTrackTTFU and %^FU logformat to log the time
difference between request start and last request body byte read (finished upload).
[Rainer Jung]
*) mod_ssl: add support for TLSv1.3 (tested with OpenSSL v1.1.1-pre4, other libs may
need more sugar). SSL(Proxy)CipherSuite now has an optional first parameter for the
protocol the ciphers are for.
Directive "SSLVerifyClient" now triggers certificate retrieval from the client (this
is not fully tested - but fails in similar fashion as in TLSv1.2 in my setups).
Verifying the client fails exactly the same for HTTP/2 connections for all SSL protocols,
as this would need to trigger the master connection thread - which we do not support
right now.
Renegotiation of ciphers is intentionally ignored for TLSv1.3 connections. "SSLCipherSuite"
does not allow to specify TLSv1.3 ciphers in a directory context (because it cannot work) and
TLSv1.2 or lower ciphers are not relevant, as cipher suites are completely separate.
This means there is a bit if a world split when simultaneously having TLSv1.2 and TLSv1.3
connections to the same server.
[Yann Ylavic, Stefan Eissing]
*) mod_ssl: proper checks for libressl 2.07/8 and its TLSv1_3 support, see PR 62236.
[Bernard Spil <brnrd@freebsd.org>]
*) mod_cgi: Add CGIScriptTimeout to make mod_cgi's timeout per-directory and
independent of the core Timeout directive. PR 62229.
[Hank Ibell <hwibell gmail.com>]
*) mod_ssl: heavily simplified SSLPolicy. No more user defines, no propxy policies,
just the basic "modern", "intermediate" and "old" as specified by Mozilla security.
[Stefan Eissing]
*) mod_md: fixes error in renew window calculation that may lead to mod_md running
watchdog in a tight loop until actual renewal becomes necessary. [Stefan Eissing]
*) mod_md: /.well-known/acme-challenge requests that cannot be answered for hostnames
outside the configured MDs are free to be answered by other handlers. This allows
co-existance between mod_md and other ACME clients on the same server (implements PR62189).
[Stefan Eissing, Arkadiusz Miskiewicz <arekm@maven.pl>]
*) core: Create a conn_config_t structure to hold an extendable core config rather
than consuming the whole pointer with the connection socket. [Graham Leggett]
*) core: adding AP_DECLARE for ap_parse_vhost_addrs() and minor bump mmn. Resolves
building mod_ssl on Windows. [Stefan Eissing, Gregg Smith]
*) core: adding defines to allow interworking with honggfuzz without
further patches. [Stefan Eissing, Robert Swiecki]
*) mod_headers: 'RequestHeader set|edit|edit_r Content-Type X' could
inadvertently modify the Content-Type _response_ header. Applies to
Content-Type only and likely to only affect static file responses.
[Eric Covener]
*) mod_cgi: Improve AH01215 messages to make it more clear that the message is
the CGI scripts stderr output. PR 61980. [Hank Ibell <hwibell gmail.com>]
*) mod_headers: Allow 'Header unset Content-Type' to remove the Content-Type
header. PR 61983. [Hank Ibell <hwibell gmail.com>]
*) mod_md v1.1.8: new configuration directive "MDBaseServer on|off" to allow/inhibit
management of the base server domains outside VirtualHosts. By default, this is "off",
e.g. mod_md will not manage certificates or perform https: redirections on the
base server. [Stefan Eissing]
*) core: Add "AcceptErrorsNonFatal" to allow ECONNREFUSED, ECONNABORTED, and
ECONNRESET during the client accept() to not trigger graceful shutdown of
the child process. [Eric Covener]
*) mod_md v1.1.7:
- MDMustStaple was unable to create the necessary OpenSSL OBJ identifier on some platforms,
possibly because this fails if the OID is already configured in ```openssl.cnf```, see
[here](https://github.com/openssl/openssl/issues/2795).
- Two memory leaks in cert issuer and alt-names lookup eliminated by Yann Ylavic.
- Changing MDMustStaple triggers certificate renewal.
- More verbosity when *not* handing out certificates, e.g. mod_ssl asks, but mod_md has no
idea what it is talking about. Some people report misbehaviour here.
- Re-enabled support for md_get_credentials() function that was used in older mod_ssl
patch, so that people with old patched servers get a chance to upgrade.
[Stefan Eissing, Yann Ylavic]
*) mod_substitute: Allow expressions in the substitution, prefixed with expr=
[Eric Covener]
*) mod_md: fixed mem pool usage for auto-added server names. Added
error logging of exact ACME response when challenges failed.
[Stefan Eissing]
*) mod_md: reverses most of v1.0.5 optimization of post_config init, so that
mod_ssl can ask for certificates without crashing. [Stefan Eissing]
*) mod_proxy: allow SSLProxyCheckPeer* usage for all proxy modules.
PR 61857. [Yann Ylavic]
*) mod_proxy_html: fix handling of <meta http-equiv> elements.
PR 58121. [Nick Kew]
*) mod_md: fixed backward compatibility to old <ManagedDomain configuration.
Add higher level WARNING log when initial request to ACME server fails, mentioning
some advice. [Stefan Eissing]
*) mod_md: name change in configuration directives. The old names are still working
in this version, so you can safely upgrade. They will give warnings in the log and
will disappear in the immediate future. ManagedDomain is now MDomain,
<ManagedDomain> is now <MDomainSet>. [Stefan Eissing]
*) mod_ssl: renamed section <SSLPolicy to <SSLPolicyDefine. Fixed behaviour
for new server config merge flag. Denying global, only once used directives
inside a SSLPolicyDefine. [Stefan Eissing]
*) mod_auth_basic: Be less tolerant when parsing the credencial. Only spaces
should be accepted after the authorization scheme. \t are also tolerated.
[Christophe Jaillet]
*) core: Support zone/scope in IPv6 link-local addresses in Listen and
VirtualHost directives (requires APR 1.7.x or later). PR 59396. [Joe Orton]
*) mod_md: v1.0.5, restricting post_config dry run to be more silent and performing
only necessary work for mod_ssl to be also happy with the configuration.
[Stefan Eissing]
*) mod_md: v1.0.4, removed the 'a2md' utility command from build. Only used in github
testing. Avoid problems with our build system that had problems after the latest
changes to make a clean initial build. Remove the windows a2md.dsp therefore also.
[Stefan Eissing]
*) mod_ssl: Fail with 403 if the username for FakeBasicAuth mode
includes a colon character. PR 52644. [Joe Orton]
*) mod_md: v1.0.3, fixed various bugs in persisting job properties, so that status is
persisted across child process changes and staging is reset on reloads. Changed
MDCertificateAgreement url checks. As long as the CA reports that the account has
an agreement, no further checking is done. Existing accounts need no changes when
a new agreement comes out. [Stefan Eissing]
*) mod_watchdog: Correct some log messages. [Rainer Jung]
*) mod_noloris: complete build setup. [Rainer Jung]
*) mod_md: fix static compilation. [Rainer Jung]
*) mod_md: fix compilation of helper binary a2md. [Rainer Jung]
*) core: fix pcre feature detection in configure when using pcre2. [Rainer Jung]
Changes with Apache 2.5.0-alpha
*) mod_md: v1.0.1, ServerName/Alias names from pure-http: virtual hosts are no longer
auto-added to a Managed Domain. Error counts of jobs are persisted. When the server
restarts (gracefully) any errored staging areas are purged to reset the signup/renewal
process. [Stefan Eissing]
*) mod_md: v1.0.0, new config directive 'MDNotifyCmd' to hook in a program when Managed
Domains have obtained/renewed their certificates successfully. [Stefan Eissing]
*) mod_md: v0.9.9, fix for applying challenge type based on available ports. [Stefan Eissing]
*) mod_md: v0.9.7
- Use of the new module flag
- Removed obsolete function from interface to mod_ssl.
- Fallback certificates has version set and no longer claims to be a CA. (re issue #32)
- MDRequireHttps now happens before any Redirect.
[Stefan Eissing]
*) mod_ssl: unshare SSLSrvConfigRec instances between base server and virtual hosts. This avoids
overwrites of later initializattions (vhost_id), selective disables by "SSLEngine addr-list"
and certificate/key pickup from mod_md. [Stefan Eissing]
*) mod_md: v0.9.6: a "MDRequireHttps permanent" configured domain automatically sends out
HSTS (rfc 6797) headers in https: responses. [Stefan Eissing]
*) mod_ssl: adding ssl_policies.h[.in] for policy cipher/protocol definitions. Use
update_policies.py to update manually from Mozilla JSON definitions at
https://statics.tls.security.mozilla.org/server-side-tls-conf.json
[Stefan Eissing]
*) mod_md: v0.9.5:
- New directive (srly: what do you expect at this point?) "MDMustStaple on|off" to control if
new certificates are requested with the OCSP Must Staple extension.
- Known limitation: when the server is configured to ditch and restart child processes, for example
after a certain number of connections/requests, the mod_md watchdog instance might migrate
to a new child process. Since not all its state is persisted, some messages might appear a
second time in the logs.
- Adding checks when 'MDRequireHttps' is used. It is considered an error when 'MDPortMap 443:-'
is used - which negates that a https: port exists. Also, a warning is logged if no
VirtualHost can be found for a Managed Domain that has port 443 (or the mapped one) in
its address list.
- New directive 'MDRequireHttps' for redirecting http: traffic to a Managed Domain, permanently
or temporarily.
- Fix for using a fallback certificate on initial signup of a Managed Domain. Requires also
a changed mod_ssl patch (v5) to take effect.
- compatibility with libressl
[Stefan Eissing]
*) mod_md: v0.9.2: new directive 'MDHttpProxy' to define a proxy for outgoing connection,
some minor bugfixes, twiddle the build system to avoid non-pic code generation.
[Stefan Eissing]
*) mod_md: v0.9.1:
- various fixes in MDRenewWindow handling when specifying percent. Serialization changed. If
someone already used percent configurations, it is advised to change these to a new value,
reload and change back to the wanted ones.
- various fixes in handling of MDPrivateKeys when specifying 2048 bits (the default) explicitly.
- mod_md version removed from top level md_store.json file. The store has its own format version
to facilitate upgrades.
[Stefan Eissing]
*) mod_md: v0.9.0:
Certificate provisioning from Let's Encrypt (and other ACME CAs) for mod_ssl virtual hosts.
[Stefan Eissing]
*) mod_ssl: add SSLPolicy (define/use) and SSLProxyPolicy directives plus documentation. Add
core definitions for policies 'modern', 'intermediate' and 'old', as defined by Mozilla
in <https://wiki.mozilla.org/Security/Server_Side_TLS>. [Stefan Eissing]
*) mod_md: new module for managing domains across VirtualHosts with ACME protocol
implementation for automated certificate signup and renewal. Default CA is
the test area of Let's Encrypt right now, so certificates root will not be valid.
Will be switched to the real service endpoint rather soon. If you need it now,
configure 'MDCertificateAuthority https://acme-v01.api.letsencrypt.org/directory'.
[Stefan Eissing]
*) mod_rewrite: Add 'RewriteOptions LongURLOptimization' to free memory
from each set of unmatched rewrite conditions.
[Eric Covener]
*) Allow the argument to <IfFile>, <IfDefine>, <IfSection>, <IfDirective>,
and <IfModule> to be quoted. This is primarily for the benefit of
<IfFile>. [Eric Covener]
*) Introduce request taint checking framework to prevent privilege
hijacking through .htaccess. [Nick Kew]
*) Add <IfDirective> and <IfSection> directives. [Joe Orton]
*) When using mod_status with the Event MPM, report the number of requests
associated with an active connection in the "ACC" field. Previously