zlib: decompression throw on truncated input #2595

jhamhader · 2015-08-28T11:58:57Z

Check for unexpected end-of-stream error when decompressing.
If the output buffer still has space after decompressing and deflate
returned Z_OK or Z_BUF_ERROR - that means unexpected end-of-stream.
Added test-zlib-truncated.js for the case of truncated input.
Fixed the zlib dictionary test to not end the inflate stream on a
truncated output (no crc) of deflate
See issue #2043

Fishrock123 · 2015-08-28T13:05:24Z

CI run: https://jenkins-iojs.nodesource.com/job/node-test-pull-request/200/

Fishrock123 · 2015-08-28T13:06:12Z

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+
+var common = require('../common');
+var assert = require('assert');
+var zlib = require ('zlib');


Please use const for values that won't be changed that you either added or modified in this commit. :)

Thanks for the input :)
Should I use 'let' for the scope-specific variables or is 'var' ok?

jhamhader · 2015-08-28T17:19:01Z

Committed 'let' and 'const' for 'test-zlib-dictionary.js' and 'test-zlib-truncated.js'

indutny · 2015-09-24T17:04:46Z

cc @nodejs/collaborators

trevnorris · 2015-09-24T17:24:15Z

Is this done elsewhere (as in, in other programs), and/or is it what the user would expect to happen?

jhamhader · 2015-09-27T16:12:23Z

gnu gunzip: fails with unexpected end of file
python2 gzip: fails with IOError: CRC check failed 0xca600aac != 0x6fe58c67L
python3 gzip: fails with EOFError: Compressed file ended before the end-of-stream marker was reached
ruby gzip: fails with Zlib::GzipFile::Error: unexpected end of file
perl gzip: fails with unexpected end of file at (eval 15)[/usr/share/perl5/core_perl/perl5db.pl:737] line 2.

trevnorris · 2015-09-27T17:09:30Z

Seems at the minimum we should be propagation an error. So will it throw for sync and emit error on async? (not familiar w/ much of the zlib api)

jhamhader · 2015-09-27T20:34:14Z

Throw for sync.
What do you mean by emit? The callback of the async function will be called with err on the first argument.

Check for unexpected end-of-file error when decompressing. If the output buffer still has space after decompressing and deflate returned Z_OK or Z_BUF_ERROR - that means unexpected end-of-file. Added test-zlib-truncated.js for the case of truncated input. Fixed the zlib dictionary test to not end the inflate stream on a truncated output (no crc) of deflate

trevnorris · 2015-09-28T17:59:26Z

The callback of the async function will be called with err on the first argument.

Nm me. Was thinking about using zlib w/ the streams API and how a pipe would propagate the error.

jhamhader · 2015-09-28T18:01:56Z

Sure :)
Anything else missing for the PR?

trevnorris · 2015-09-28T18:03:13Z

Not from me. Would like @indutny to sign off on this as well.

thefourtheye · 2015-09-29T01:54:54Z

I would prefer @chrisdickinson to sign off as well.

jhamhader · 2015-10-08T18:30:55Z

@indutny @chrisdickinson could you please take a look and confirm?
Thanks :)

trevnorris · 2015-10-08T21:54:58Z

@jhamhader ping me tomorrow if @indutny hasn't responded.

jhamhader · 2015-10-10T12:15:09Z

Pinging

trevnorris · 2015-10-10T18:11:10Z

Thanks. Let's go ahead and land this. I'll be back at my computer on Monday.

Also, I'm initially inclined to say this is semver-major. Even if it's not, don't know if this is something LTS would accept. We can check after it's in master. :-)

Fishrock123 · 2015-10-19T14:30:55Z

ping @trevnorris

trevnorris · 2015-10-19T21:07:03Z

Landed on 0fc0902. Thanks much!

Check for unexpected end-of-file error when decompressing. If the output buffer still has space after decompressing and deflate returned Z_OK or Z_BUF_ERROR - that means unexpected end-of-file. Added test-zlib-truncated.js for the case of truncated input. Fixed the zlib dictionary test to not end the inflate stream on a truncated output (no crc) of deflate Fixes: #2043 PR-URL: #2595 Reviewed-By: Trevor Norris <trev.norris@gmail.com>

Notable changes: * buffer: (Breaking) Removed both 'raw' and 'raws' encoding types from Buffer, these have been deprecated for a long time (Sakthipriyan Vairamani) nodejs#2859. * console: (Breaking) Values reported by console.time() now have 3 decimals of accuracy added (Michaël Zasso) nodejs#3166. * fs: - fs.readFile*(), fs.writeFile*(), and fs.appendFile*() now also accept a file descriptor as their first argument (Johannes Wüller) nodejs#3163. - (Breaking) In fs.readFile(), if an encoding is specified and the internal toString() fails the error is no longer thrown but is passed to the callback (Evan Lucas) nodejs#3485. - (Breaking) In fs.read() (using the fs.read(fd, length, position, encoding, callback) form), if the internal toString() fails the error is no longer thrown but is passed to the callback (Evan Lucas) nodejs#3503. * http: - Fixed a bug where pipelined http requests would stall (Fedor Indutny) nodejs#3342. - (Breaking) When parsing HTTP, don't add duplicates of the following headers: Retry-After, ETag, Last-Modified, Server, Age, Expires. This is in addition to the following headers which already block duplicates: Content-Type, Content-Length, User-Agent, Referer, Host, Authorization, Proxy-Authorization, If-Modified-Since, If-Unmodified-Since, From, Location, Max-Forwards (James M Snell) nodejs#3090. - (Breaking) The callback argument to OutgoingMessage#setTimeout() must be a function or a TypeError is thrown (James M Snell) nodejs#3090. - (Breaking) HTTP methods and header names must now conform to the RFC 2616 "token" rule, a list of allowed characters that excludes control characters and a number of separator characters. Specifically, methods and header names must now match /^[a-zA-Z0-9_!#$%&'*+.^`|~-]+$/ or a TypeError will be thrown (James M Snell) nodejs#2526. * node: - (Breaking) Deprecated the _linklist module (Rich Trott) nodejs#3078. - (Breaking) Removed require.paths and require.registerExtension(), both had been previously set to throw Error when accessed (Sakthipriyan Vairamani) nodejs#2922. * npm: Upgraded to version 3.3.6 from 2.14.7, see https://github.com/npm/npm/releases/tag/v3.3.6 for more details. This is a major version bump for npm and it has seen a significant amount of change. Please see the original npm v3.0.0 release notes for a list of major changes (Rebecca Turner) nodejs#3310. * src: (Breaking) Bumped NODE_MODULE_VERSION to 47 from 46, this is necessary due to the V8 upgrade. Native add-ons will need to be recompiled (Rod Vagg) nodejs#3400. * timers: Attempt to reuse the timer handle for setTimeout().unref(). This fixes a long-standing known issue where unrefed timers would perviously hold beforeExit open (Fedor Indutny) nodejs#3407. * tls: - Added ALPN Support (Shigeki Ohtsu) nodejs#2564. - TLS options can now be passed in an object to createSecurePair() (Коренберг Марк) nodejs#2441. - (Breaking) The default minimum DH key size for tls.connect() is now 1024 bits and a warning is shown when DH key size is less than 2048 bits. This a security consideration to prevent "logjam" attacks. A new minDHSize TLS option can be used to override the default. (Shigeki Ohtsu) nodejs#1831. * util: - (Breaking) util.p() was deprecated for years, and has now been removed (Wyatt Preul) nodejs#3432. - (Breaking) util.inherits() can now work with ES6 classes. This is considered a breaking change because of potential subtle side-effects caused by a change from directly reassigning the prototype of the constructor using `ctor.prototype = Object.create(superCtor.prototype, { constructor: { ... } })` to using `Object.setPrototypeOf(ctor.prototype, superCtor.prototype)` (Michaël Zasso) nodejs#3455. * v8: (Breaking) Upgraded to 4.6.85.25 from 4.5.103.35 (Ali Ijaz Sheikh) nodejs#3351. - Implements the spread operator, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator for further information. - Implements new.target, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new.target for further information. * zlib: Decompression now throws on truncated input (e.g. unexpected end of file) (Yuval Brik) nodejs#2595. PR-URL: nodejs#3466

Notable changes: * buffer: (Breaking) Removed both 'raw' and 'raws' encoding types from Buffer, these have been deprecated for a long time (Sakthipriyan Vairamani) #2859. * console: (Breaking) Values reported by console.time() now have 3 decimals of accuracy added (Michaël Zasso) #3166. * fs: - fs.readFile*(), fs.writeFile*(), and fs.appendFile*() now also accept a file descriptor as their first argument (Johannes Wüller) #3163. - (Breaking) In fs.readFile(), if an encoding is specified and the internal toString() fails the error is no longer thrown but is passed to the callback (Evan Lucas) #3485. - (Breaking) In fs.read() (using the fs.read(fd, length, position, encoding, callback) form), if the internal toString() fails the error is no longer thrown but is passed to the callback (Evan Lucas) #3503. * http: - Fixed a bug where pipelined http requests would stall (Fedor Indutny) #3342. - (Breaking) When parsing HTTP, don't add duplicates of the following headers: Retry-After, ETag, Last-Modified, Server, Age, Expires. This is in addition to the following headers which already block duplicates: Content-Type, Content-Length, User-Agent, Referer, Host, Authorization, Proxy-Authorization, If-Modified-Since, If-Unmodified-Since, From, Location, Max-Forwards (James M Snell) #3090. - (Breaking) The callback argument to OutgoingMessage#setTimeout() must be a function or a TypeError is thrown (James M Snell) #3090. - (Breaking) HTTP methods and header names must now conform to the RFC 2616 "token" rule, a list of allowed characters that excludes control characters and a number of separator characters. Specifically, methods and header names must now match /^[a-zA-Z0-9_!#$%&'*+.^`|~-]+$/ or a TypeError will be thrown (James M Snell) #2526. * node: - (Breaking) Deprecated the _linklist module (Rich Trott) #3078. - (Breaking) Removed require.paths and require.registerExtension(), both had been previously set to throw Error when accessed (Sakthipriyan Vairamani) #2922. * npm: Upgraded to version 3.3.6 from 2.14.7, see https://github.com/npm/npm/releases/tag/v3.3.6 for more details. This is a major version bump for npm and it has seen a significant amount of change. Please see the original npm v3.0.0 release notes for a list of major changes (Rebecca Turner) #3310. * src: (Breaking) Bumped NODE_MODULE_VERSION to 47 from 46, this is necessary due to the V8 upgrade. Native add-ons will need to be recompiled (Rod Vagg) #3400. * timers: Attempt to reuse the timer handle for setTimeout().unref(). This fixes a long-standing known issue where unrefed timers would perviously hold beforeExit open (Fedor Indutny) #3407. * tls: - Added ALPN Support (Shigeki Ohtsu) #2564. - TLS options can now be passed in an object to createSecurePair() (Коренберг Марк) #2441. - (Breaking) The default minimum DH key size for tls.connect() is now 1024 bits and a warning is shown when DH key size is less than 2048 bits. This a security consideration to prevent "logjam" attacks. A new minDHSize TLS option can be used to override the default. (Shigeki Ohtsu) #1831. * util: - (Breaking) util.p() was deprecated for years, and has now been removed (Wyatt Preul) #3432. - (Breaking) util.inherits() can now work with ES6 classes. This is considered a breaking change because of potential subtle side-effects caused by a change from directly reassigning the prototype of the constructor using `ctor.prototype = Object.create(superCtor.prototype, { constructor: { ... } })` to using `Object.setPrototypeOf(ctor.prototype, superCtor.prototype)` (Michaël Zasso) #3455. * v8: (Breaking) Upgraded to 4.6.85.25 from 4.5.103.35 (Ali Ijaz Sheikh) #3351. - Implements the spread operator, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator for further information. - Implements new.target, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new.target for further information. * zlib: Decompression now throws on truncated input (e.g. unexpected end of file) (Yuval Brik) #2595. PR-URL: #3466

targos added the zlib label Aug 28, 2015

Fishrock123 reviewed Aug 28, 2015
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rvagg force-pushed the nodejs:master branch from 11c25c2 to ba02bd0 Sep 6, 2015

jhamhader force-pushed the jhamhader:zlib-truncated branch 2 times, most recently Sep 19, 2015

jhamhader force-pushed the jhamhader:zlib-truncated branch Sep 27, 2015

jhamhader force-pushed the jhamhader:zlib-truncated branch to aae310e Sep 28, 2015

Fishrock123 added the semver-major label Oct 10, 2015

Fishrock123 added this to the 5.0.0 milestone Oct 10, 2015

rvagg mentioned this pull request Oct 16, 2015

v5.0.0 Planning & Checklist #3397

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13 of 13 tasks complete

trevnorris closed this Oct 19, 2015

rvagg mentioned this pull request Oct 21, 2015

Release proposal: v5.0.0 #3466

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This was referenced Nov 25, 2015

Is there a proper way to send zlib partial files for unzipping? #4030

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Error reading some .nii.gz files bids-standard/bids-validator#52

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jhamhader mentioned this pull request Mar 17, 2016

Gzip decoder too strict #5761

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tomhughes mentioned this pull request Mar 31, 2016

Fix "incomplete" test fixture to be valid gzip of incomplete data mapbox/tilelive#167

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conradoplg mentioned this pull request Oct 25, 2016

Zlib._handle.onerror unexpected end of file ttezel/twit#300

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nodejs / node

zlib: decompression throw on truncated input #2595

zlib: decompression throw on truncated input #2595

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zlib: decompression throw on truncated input #2595

zlib: decompression throw on truncated input #2595

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