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NOTE: We are looking for help with a few things:
https://github.com/libexpat/libexpat/labels/help%20wanted
If you can help, please get in touch. Thanks!
Release 2.2.? ????????????????
Security fixes:
#82 CVE-2017-11742 -- Windows: Fix DLL hijacking vulnerability
using Steve Holme's LoadLibrary wrapper for/of cURL
Bug fixes:
#85 Fix a dangling pointer issue related to realloc
Other changes:
Increase code coverage
#91 Linux: Allow getrandom to fail if nonblocking pool has not
yet been initialized and read /dev/urandom then, instead.
This is in line with what recent Python does.
#81 Pre-10.7/Lion macOS: Support entropy from arc4random
#86 Check that a UTF-16 encoding in an XML declaration has the
right endianness
#4 #5 #7 Recover correctly when some reallocations fail
Repair "./configure && make" for systems without any
provider of high quality entropy
and try reading /dev/urandom on those
Ensure that user-defined character encodings have converter
functions when they are needed
Fix mis-leading description of argument -c in xmlwf.1
Rely on macro HAVE_ARC4RANDOM_BUF (rather than __CloudABI__)
for CloudABI
#100 Fix use of SIPHASH_MAIN in siphash.h
#23 Test suite: Fix memory leaks
Version info bumped from 7:4:6 to 7:5:6
Special thanks to:
Chanho Park
Joe Orton
Pascal Cuoq
Rhodri James
Simon McVittie
Vadim Zeitlin
Viktor Szakats
and
Core Infrastructure Initiative
Release 2.2.2 Wed July 12 2017
Security fixes:
#43 Protect against compilation without any source of high
quality entropy enabled, e.g. with CMake build system;
commit ff0207e6076e9828e536b8d9cd45c9c92069b895
#60 Windows with _UNICODE:
Unintended use of LoadLibraryW with a non-wide string
resulted in failure to load advapi32.dll and degradation
in quality of used entropy when compiled with _UNICODE for
Windows; you can launch existing binaries with
EXPAT_ENTROPY_DEBUG=1 in the environment to inspect the
quality of entropy used during runtime; commits
* 95b95032f907ef1cd17ee7a9a1768010a825d61d
* 73a5a2e9c081f49f2d775cf7ced864158b68dc80
[MOX-006] Fix non-NULL parser parameter validation in XML_Parse;
resulted in NULL dereference, previously;
commit ac256dafdffc9622ab0dc2c62fcecb0dfcfa71fe
Bug fixes:
#69 Fix improper use of unsigned long long integer literals
Other changes:
#73 Start requiring a C99 compiler
#49 Fix "==" Bashism in configure script
#50 Fix too eager getrandom detection for Debian GNU/kFreeBSD
#52 and macOS
#51 Address lack of stdint.h in Visual Studio 2003 to 2008
#58 Address compile warnings
#68 Fix "./buildconf.sh && ./configure" for some versions
of Dash for /bin/sh
#72 CMake: Ease use of Expat in context of a parent project
with multipe CMakeLists.txt files
#72 CMake: Resolve mistaken executable permissions
#76 Address compile warning with -DNDEBUG (not recommended!)
#77 Address compile warning about macro redefinition
Special thanks to:
Alexander Bluhm
Ben Boeckel
Cătălin Răceanu
Kerin Millar
László Böszörményi
S. P. Zeidler
Segev Finer
Václav Slavík
Victor Stinner
Viktor Szakats
and
Radically Open Security
Release 2.2.1 Sat June 17 2017
Security fixes:
CVE-2017-9233 -- External entity infinite loop DoS
Details: https://libexpat.github.io/doc/cve-2017-9233/
Commit c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f
[MOX-002] CVE-2016-9063 -- Detect integer overflow; commit
d4f735b88d9932bd5039df2335eefdd0723dbe20
(Fixed version of existing downstream patches!)
(SF.net) #539 Fix regression from fix to CVE-2016-0718 cutting off
longer tag names; commits
* 896b6c1fd3b842f377d1b62135dccf0a579cf65d
* af507cef2c93cb8d40062a0abe43a4f4e9158fb2
#16 * 0dbbf43fdb20f593ddf4fa1ff67288000dd4a7fd
#25 More integer overflow detection (function poolGrow); commits
* 810b74e4703dcfdd8f404e3cb177d44684775143
* 44178553f3539ce69d34abee77a05e879a7982ac
[MOX-002] Detect overflow from len=INT_MAX call to XML_Parse; commits
* 4be2cb5afcc018d996f34bbbce6374b7befad47f
* 7e5b71b748491b6e459e5c9a1d090820f94544d8
[MOX-005] #30 Use high quality entropy for hash initialization:
* arc4random_buf on BSD, systems with libbsd
(when configured with --with-libbsd), CloudABI
* RtlGenRandom on Windows XP / Server 2003 and later
* getrandom on Linux 3.17+
In a way, that's still part of CVE-2016-5300.
https://github.com/libexpat/libexpat/pull/30/commits
[MOX-005] For the low quality entropy extraction fallback code,
the parser instance address can no longer leak, commit
04ad658bd3079dd15cb60fc67087900f0ff4b083
[MOX-003] Prevent use of uninitialised variable; commit
[MOX-004] a4dc944f37b664a3ca7199c624a98ee37babdb4b
Add missing parameter validation to public API functions
and dedicated error code XML_ERROR_INVALID_ARGUMENT:
[MOX-006] * NULL checks; commits
* d37f74b2b7149a3a95a680c4c4cd2a451a51d60a (merge/many)
* 9ed727064b675b7180c98cb3d4f75efba6966681
* 6a747c837c50114dfa413994e07c0ba477be4534
* Negative length (XML_Parse); commit
[MOX-002] 70db8d2538a10f4c022655d6895e4c3e78692e7f
[MOX-001] #35 Change hash algorithm to William Ahern's version of SipHash
to go further with fixing CVE-2012-0876.
https://github.com/libexpat/libexpat/pull/39/commits
Bug fixes:
#32 Fix sharing of hash salt across parsers;
relevant where XML_ExternalEntityParserCreate is called
prior to XML_Parse, in particular (e.g. FBReader)
#28 xmlwf: Auto-disable use of memory-mapping (and parsing
as a single chunk) for files larger than ~1 GB (2^30 bytes)
rather than failing with error "out of memory"
#3 Fix double free after malloc failure in DTD code; commit
7ae9c3d3af433cd4defe95234eae7dc8ed15637f
#17 Fix memory leak on parser error for unbound XML attribute
prefix with new namespaces defined in the same tag;
found by Google's OSS-Fuzz; commits
* 16f87daae5a16132e479e4f71862128c7a915c73
* b47dbc9745932c160893d433220e462bd605f8cd
xmlwf on Windows: Add missing calls to CloseHandle
New features:
#30 Introduced environment switch EXPAT_ENTROPY_DEBUG=1
for runtime debugging of entropy extraction
Other changes:
Increase code coverage
#33 Reject use of XML_UNICODE_WCHAR_T with sizeof(wchar_t) != 2;
XML_UNICODE_WCHAR_T was never meant to be used outside
of Windows; 4-byte wchar_t is common on Linux
(SF.net) #538 Start using -fno-strict-aliasing
(SF.net) #540 Support compilation against cloudlibc of CloudABI
Allow MinGW cross-compilation
(SF.net) #534 CMake: Introduce option "BUILD_doc" (enabled by default)
to bypass compilation of the xmlwf.1 man page
(SF.net) pr2 CMake: Introduce option "INSTALL" (enabled by default)
to bypass installation of expat files
CMake: Fix ninja support
Autotools: Add parameters --enable-xml-context [COUNT]
and --disable-xml-context; default of context of 1024
bytes enabled unchanged
#14 Drop AmigaOS 4.x code and includes
#14 Drop ancient build systems:
* Borland C++ Builder
* OpenVMS
* Open Watcom
* Visual Studio 6.0
* Pre-X Mac OS (MPW Makefile)
If you happen to rely on some of these, please get in
touch for joining with maintenance.
#10 Move from WIN32 to _WIN32
#13 Fix "make run-xmltest" order instability
Address compile warnings
Bump version info from 7:2:6 to 7:3:6
Add AUTHORS file
Infrastructure:
#1 Migrate from SourceForge to GitHub (except downloads):
https://github.com/libexpat/
#1 Re-create http://libexpat.org/ project website
Start utilizing Travis CI
Special thanks to:
Andy Wang
Don Lewis
Ed Schouten
Karl Waclawek
Pascal Cuoq
Rhodri James
Sergei Nikulov
Tobias Taschner
Viktor Szakats
and
Core Infrastructure Initiative
Mozilla Foundation (MOSS Track 3: Secure Open Source)
Radically Open Security
Release 2.2.0 Tue June 21 2016
Security fixes:
#537 CVE-2016-0718 -- Fix crash on malformed input
CVE-2016-4472 -- Improve insufficient fix to CVE-2015-1283 /
CVE-2015-2716 introduced with Expat 2.1.1
#499 CVE-2016-5300 -- Use more entropy for hash initialization
than the original fix to CVE-2012-0876
#519 CVE-2012-6702 -- Resolve troublesome internal call to srand
that was introduced with Expat 2.1.0
when addressing CVE-2012-0876 (issue #496)
Bug fixes:
Fix uninitialized reads of size 1
(e.g. in little2_updatePosition)
Fix detection of UTF-8 character boundaries
Other changes:
#532 Fix compilation for Visual Studio 2010 (keyword "C99")
Autotools: Resolve use of "$<" to better support bmake
Autotools: Add QA script "qa.sh" (and make target "qa")
Autotools: Respect CXXFLAGS if given
Autotools: Fix "make run-xmltest"
Autotools: Have "make run-xmltest" check for expected output
p90 CMake: Fix static build (BUILD_shared=OFF) on Windows
#536 CMake: Add soversion, support -DNO_SONAME=yes to bypass
#323 CMake: Add suffix "d" to differentiate debug from release
CMake: Define WIN32 with CMake on Windows
Annotate memory allocators for GCC
Address all currently known compile warnings
Make sure that API symbols remain visible despite
-fvisibility=hidden
Remove executable flag from source files
Resolve COMPILED_FROM_DSP in favor of WIN32
Special thanks to:
Björn Lindahl
Christian Heimes
Cristian Rodríguez
Daniel Krügler
Gustavo Grieco
Karl Waclawek
László Böszörményi
Marco Grassi
Pascal Cuoq
Sergei Nikulov
Thomas Beutlich
Warren Young
Yann Droneaud
Release 2.1.1 Sat March 12 2016
Security fixes:
#582: CVE-2015-1283 - Multiple integer overflows in XML_GetBuffer
Bug fixes:
#502: Fix potential null pointer dereference
#520: Symbol XML_SetHashSalt was not exported
Output of "xmlwf -h" was incomplete
Other changes:
#503: Document behavior of calling XML_SetHashSalt with salt 0
Minor improvements to man page xmlwf(1)
Improvements to the experimental CMake build system
libtool now invoked with --verbose
Release 2.1.0 Sat March 24 2012
- Security fixes:
#2958794: CVE-2012-1148 - Memory leak in poolGrow.
#2895533: CVE-2012-1147 - Resource leak in readfilemap.c.
#3496608: CVE-2012-0876 - Hash DOS attack.
#2894085: CVE-2009-3560 - Buffer over-read and crash in big2_toUtf8().
#1990430: CVE-2009-3720 - Parser crash with special UTF-8 sequences.
- Bug Fixes:
#1742315: Harmful XML_ParserCreateNS suggestion.
#1785430: Expat build fails on linux-amd64 with gcc version>=4.1 -O3.
#1983953, 2517952, 2517962, 2649838:
Build modifications using autoreconf instead of buildconf.sh.
#2815947, #2884086: OBJEXT and EXEEXT support while building.
#2517938: xmlwf should return non-zero exit status if not well-formed.
#2517946: Wrong statement about XMLDecl in xmlwf.1 and xmlwf.sgml.
#2855609: Dangling positionPtr after error.
#2990652: CMake support.
#3010819: UNEXPECTED_STATE with a trailing "%" in entity value.
#3206497: Unitialized memory returned from XML_Parse.
#3287849: make check fails on mingw-w64.
- Patches:
#1749198: pkg-config support.
#3010222: Fix for bug #3010819.
#3312568: CMake support.
#3446384: Report byte offsets for attr names and values.
- New Features / API changes:
Added new API member XML_SetHashSalt() that allows setting an initial
value (salt) for hash calculations. This is part of the fix for
bug #3496608 to randomize hash parameters.
When compiled with XML_ATTR_INFO defined, adds new API member
XML_GetAttributeInfo() that allows retrieving the byte
offsets for attribute names and values (patch #3446384).
Added CMake build system.
See bug #2990652 and patch #3312568.
Added run-benchmark target to Makefile.in - relies on testdata module
present in the same relative location as in the repository.
Release 2.0.1 Tue June 5 2007
- Fixed bugs #1515266, #1515600: The character data handler's calling
of XML_StopParser() was not handled properly; if the parser was
stopped and the handler set to NULL, the parser would segfault.
- Fixed bug #1690883: Expat failed on EBCDIC systems as it assumed
some character constants to be ASCII encoded.
- Minor cleanups of the test harness.
- Fixed xmlwf bug #1513566: "out of memory" error on file size zero.
- Fixed outline.c bug #1543233: missing a final XML_ParserFree() call.
- Fixes and improvements for Windows platform:
bugs #1409451, #1476160, #1548182, #1602769, #1717322.
- Build fixes for various platforms:
HP-UX, Tru64, Solaris 9: patch #1437840, bug #1196180.
All Unix: #1554618 (refreshed config.sub/config.guess).
#1490371, #1613457: support both, DESTDIR and INSTALL_ROOT,
without relying on GNU-Make specific features.
#1647805: Patched configure.in to work better with Intel compiler.
- Fixes to Makefile.in to have make check work correctly:
bugs #1408143, #1535603, #1536684.
- Added Open Watcom support: patch #1523242.
Release 2.0.0 Wed Jan 11 2006
- We no longer use the "check" library for C unit testing; we
always use the (partial) internal implementation of the API.
- Report XML_NS setting via XML_GetFeatureList().
- Fixed headers for use from C++.
- XML_GetCurrentLineNumber() and XML_GetCurrentColumnNumber()
now return unsigned integers.
- Added XML_LARGE_SIZE switch to enable 64-bit integers for
byte indexes and line/column numbers.
- Updated to use libtool 1.5.22 (the most recent).
- Added support for AmigaOS.
- Some mostly minor bug fixes. SF issues include: #1006708,
#1021776, #1023646, #1114960, #1156398, #1221160, #1271642.
Release 1.95.8 Fri Jul 23 2004
- Major new feature: suspend/resume. Handlers can now request
that a parse be suspended for later resumption or aborted
altogether. See "Temporarily Stopping Parsing" in the
documentation for more details.
- Some mostly minor bug fixes, but compilation should no
longer generate warnings on most platforms. SF issues
include: #827319, #840173, #846309, #888329, #896188, #923913,
#928113, #961698, #985192.
Release 1.95.7 Mon Oct 20 2003
- Fixed enum XML_Status issue (reported on SourceForge many
times), so compilers that are properly picky will be happy.
- Introduced an XMLCALL macro to control the calling
convention used by the Expat API; this macro should be used
to annotate prototypes and definitions of callback
implementations in code compiled with a calling convention
other than the default convention for the host platform.
- Improved ability to build without the configure-generated
expat_config.h header. This is useful for applications
which embed Expat rather than linking in the library.
- Fixed a variety of bugs: see SF issues #458907, #609603,
#676844, #679754, #692878, #692964, #695401, #699323, #699487,
#820946.
- Improved hash table lookups.
- Added more regression tests and improved documentation.
Release 1.95.6 Tue Jan 28 2003
- Added XML_FreeContentModel().
- Added XML_MemMalloc(), XML_MemRealloc(), XML_MemFree().
- Fixed a variety of bugs: see SF issues #615606, #616863,
#618199, #653180, #673791.
- Enhanced the regression test suite.
- Man page improvements: includes SF issue #632146.
Release 1.95.5 Fri Sep 6 2002
- Added XML_UseForeignDTD() for improved SAX2 support.
- Added XML_GetFeatureList().
- Defined XML_Bool type and the values XML_TRUE and XML_FALSE.
- Use an incomplete struct instead of a void* for the parser
(may not retain).
- Fixed UTF-8 decoding bug that caused legal UTF-8 to be rejected.
- Finally fixed bug where default handler would report DTD
events that were already handled by another handler.
Initial patch contributed by Darryl Miles.
- Removed unnecessary DllMain() function that caused static
linking into a DLL to be difficult.
- Added VC++ projects for building static libraries.
- Reduced line-length for all source code and headers to be
no longer than 80 characters, to help with AS/400 support.
- Reduced memory copying during parsing (SF patch #600964).
- Fixed a variety of bugs: see SF issues #580793, #434664,
#483514, #580503, #581069, #584041, #584183, #584832, #585537,
#596555, #596678, #598352, #598944, #599715, #600479, #600971.
Release 1.95.4 Fri Jul 12 2002
- Added support for VMS, contributed by Craig Berry. See
vms/README.vms for more information.
- Added Mac OS (classic) support, with a makefile for MPW,
contributed by Thomas Wegner and Daryle Walker.
- Added Borland C++ Builder 5 / BCC 5.5 support, contributed
by Patrick McConnell (SF patch #538032).
- Fixed a variety of bugs: see SF issues #441449, #563184,
#564342, #566334, #566901, #569461, #570263, #575168, #579196.
- Made skippedEntityHandler conform to SAX2 (see source comment)
- Re-implemented WFC: Entity Declared from XML 1.0 spec and
added a new error "entity declared in parameter entity":
see SF bug report #569461 and SF patch #578161
- Re-implemented section 5.1 from XML 1.0 spec:
see SF bug report #570263 and SF patch #578161
Release 1.95.3 Mon Jun 3 2002
- Added a project to the MSVC workspace to create a wchar_t
version of the library; the DLLs are named libexpatw.dll.
- Changed the name of the Windows DLLs from expat.dll to
libexpat.dll; this fixes SF bug #432456.
- Added the XML_ParserReset() API function.
- Fixed XML_SetReturnNSTriplet() to work for element names.
- Made the XML_UNICODE builds usable (thanks, Karl!).
- Allow xmlwf to read from standard input.
- Install a man page for xmlwf on Unix systems.
- Fixed many bugs; see SF bug reports #231864, #461380, #464837,
#466885, #469226, #477667, #484419, #487840, #494749, #496505,
#547350. Other bugs which we can't test as easily may also
have been fixed, especially in the area of build support.
Release 1.95.2 Fri Jul 27 2001
- More changes to make MSVC happy with the build; add a single
workspace to support both the library and xmlwf application.
- Added a Windows installer for Windows users; includes
xmlwf.exe.
- Added compile-time constants that can be used to determine the
Expat version
- Removed a lot of GNU-specific dependencies to aide portability
among the various Unix flavors.
- Fix the UTF-8 BOM bug.
- Cleaned up warning messages for several compilers.
- Added the -Wall, -Wstrict-prototypes options for GCC.
Release 1.95.1 Sun Oct 22 15:11:36 EDT 2000
- Changes to get expat to build under Microsoft compiler
- Removed all aborts and instead return an UNEXPECTED_STATE error.
- Fixed a bug where a stray '%' in an entity value would cause an
abort.
- Defined XML_SetEndNamespaceDeclHandler. Thanks to Darryl Miles for
finding this oversight.
- Changed default patterns in lib/Makefile.in to fit non-GNU makes
Thanks to robin@unrated.net for reporting and providing an
account to test on.
- The reference had the wrong label for XML_SetStartNamespaceDecl.
Reported by an anonymous user.
Release 1.95.0 Fri Sep 29 2000
- XML_ParserCreate_MM
Allows you to set a memory management suite to replace the
standard malloc,realloc, and free.
- XML_SetReturnNSTriplet
If you turn this feature on when namespace processing is in
effect, then qualified, prefixed element and attribute names
are returned as "uri|name|prefix" where '|' is whatever
separator character is used in namespace processing.
- Merged in features from perl-expat
o XML_SetElementDeclHandler
o XML_SetAttlistDeclHandler
o XML_SetXmlDeclHandler
o XML_SetEntityDeclHandler
o StartDoctypeDeclHandler takes 3 additional parameters:
sysid, pubid, has_internal_subset
o Many paired handler setters (like XML_SetElementHandler)
now have corresponding individual handler setters
o XML_GetInputContext for getting the input context of
the current parse position.
- Added reference material
- Packaged into a distribution that builds a sharable library