1 NOTE: We are looking for help with a few things:
2 https://github.com/libexpat/libexpat/labels/help%20wanted
3 If you can help, please get in touch. Thanks!
5 Release 2.2.3 Wed August 2 2017
7 #82 CVE-2017-11742 -- Windows: Fix DLL hijacking vulnerability
8 using Steve Holme's LoadLibrary wrapper for/of cURL
11 #85 Fix a dangling pointer issue related to realloc
14 Increase code coverage
15 #91 Linux: Allow getrandom to fail if nonblocking pool has not
16 yet been initialized and read /dev/urandom then, instead.
17 This is in line with what recent Python does.
18 #81 Pre-10.7/Lion macOS: Support entropy from arc4random
19 #86 Check that a UTF-16 encoding in an XML declaration has the
21 #4 #5 #7 Recover correctly when some reallocations fail
22 Repair "./configure && make" for systems without any
23 provider of high quality entropy
24 and try reading /dev/urandom on those
25 Ensure that user-defined character encodings have converter
26 functions when they are needed
27 Fix mis-leading description of argument -c in xmlwf.1
28 Rely on macro HAVE_ARC4RANDOM_BUF (rather than __CloudABI__)
30 #100 Fix use of SIPHASH_MAIN in siphash.h
31 #23 Test suite: Fix memory leaks
32 Version info bumped from 7:4:6 to 7:5:6
43 Core Infrastructure Initiative
45 Release 2.2.2 Wed July 12 2017
47 #43 Protect against compilation without any source of high
48 quality entropy enabled, e.g. with CMake build system;
49 commit ff0207e6076e9828e536b8d9cd45c9c92069b895
50 #60 Windows with _UNICODE:
51 Unintended use of LoadLibraryW with a non-wide string
52 resulted in failure to load advapi32.dll and degradation
53 in quality of used entropy when compiled with _UNICODE for
54 Windows; you can launch existing binaries with
55 EXPAT_ENTROPY_DEBUG=1 in the environment to inspect the
56 quality of entropy used during runtime; commits
57 * 95b95032f907ef1cd17ee7a9a1768010a825d61d
58 * 73a5a2e9c081f49f2d775cf7ced864158b68dc80
59 [MOX-006] Fix non-NULL parser parameter validation in XML_Parse;
60 resulted in NULL dereference, previously;
61 commit ac256dafdffc9622ab0dc2c62fcecb0dfcfa71fe
64 #69 Fix improper use of unsigned long long integer literals
67 #73 Start requiring a C99 compiler
68 #49 Fix "==" Bashism in configure script
69 #50 Fix too eager getrandom detection for Debian GNU/kFreeBSD
71 #51 Address lack of stdint.h in Visual Studio 2003 to 2008
72 #58 Address compile warnings
73 #68 Fix "./buildconf.sh && ./configure" for some versions
75 #72 CMake: Ease use of Expat in context of a parent project
76 with multipe CMakeLists.txt files
77 #72 CMake: Resolve mistaken executable permissions
78 #76 Address compile warning with -DNDEBUG (not recommended!)
79 #77 Address compile warning about macro redefinition
93 Radically Open Security
95 Release 2.2.1 Sat June 17 2017
97 CVE-2017-9233 -- External entity infinite loop DoS
98 Details: https://libexpat.github.io/doc/cve-2017-9233/
99 Commit c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f
100 [MOX-002] CVE-2016-9063 -- Detect integer overflow; commit
101 d4f735b88d9932bd5039df2335eefdd0723dbe20
102 (Fixed version of existing downstream patches!)
103 (SF.net) #539 Fix regression from fix to CVE-2016-0718 cutting off
104 longer tag names; commits
105 * 896b6c1fd3b842f377d1b62135dccf0a579cf65d
106 * af507cef2c93cb8d40062a0abe43a4f4e9158fb2
107 #16 * 0dbbf43fdb20f593ddf4fa1ff67288000dd4a7fd
108 #25 More integer overflow detection (function poolGrow); commits
109 * 810b74e4703dcfdd8f404e3cb177d44684775143
110 * 44178553f3539ce69d34abee77a05e879a7982ac
111 [MOX-002] Detect overflow from len=INT_MAX call to XML_Parse; commits
112 * 4be2cb5afcc018d996f34bbbce6374b7befad47f
113 * 7e5b71b748491b6e459e5c9a1d090820f94544d8
114 [MOX-005] #30 Use high quality entropy for hash initialization:
115 * arc4random_buf on BSD, systems with libbsd
116 (when configured with --with-libbsd), CloudABI
117 * RtlGenRandom on Windows XP / Server 2003 and later
118 * getrandom on Linux 3.17+
119 In a way, that's still part of CVE-2016-5300.
120 https://github.com/libexpat/libexpat/pull/30/commits
121 [MOX-005] For the low quality entropy extraction fallback code,
122 the parser instance address can no longer leak, commit
123 04ad658bd3079dd15cb60fc67087900f0ff4b083
124 [MOX-003] Prevent use of uninitialised variable; commit
125 [MOX-004] a4dc944f37b664a3ca7199c624a98ee37babdb4b
126 Add missing parameter validation to public API functions
127 and dedicated error code XML_ERROR_INVALID_ARGUMENT:
128 [MOX-006] * NULL checks; commits
129 * d37f74b2b7149a3a95a680c4c4cd2a451a51d60a (merge/many)
130 * 9ed727064b675b7180c98cb3d4f75efba6966681
131 * 6a747c837c50114dfa413994e07c0ba477be4534
132 * Negative length (XML_Parse); commit
133 [MOX-002] 70db8d2538a10f4c022655d6895e4c3e78692e7f
134 [MOX-001] #35 Change hash algorithm to William Ahern's version of SipHash
135 to go further with fixing CVE-2012-0876.
136 https://github.com/libexpat/libexpat/pull/39/commits
139 #32 Fix sharing of hash salt across parsers;
140 relevant where XML_ExternalEntityParserCreate is called
141 prior to XML_Parse, in particular (e.g. FBReader)
142 #28 xmlwf: Auto-disable use of memory-mapping (and parsing
143 as a single chunk) for files larger than ~1 GB (2^30 bytes)
144 rather than failing with error "out of memory"
145 #3 Fix double free after malloc failure in DTD code; commit
146 7ae9c3d3af433cd4defe95234eae7dc8ed15637f
147 #17 Fix memory leak on parser error for unbound XML attribute
148 prefix with new namespaces defined in the same tag;
149 found by Google's OSS-Fuzz; commits
150 * 16f87daae5a16132e479e4f71862128c7a915c73
151 * b47dbc9745932c160893d433220e462bd605f8cd
152 xmlwf on Windows: Add missing calls to CloseHandle
155 #30 Introduced environment switch EXPAT_ENTROPY_DEBUG=1
156 for runtime debugging of entropy extraction
159 Increase code coverage
160 #33 Reject use of XML_UNICODE_WCHAR_T with sizeof(wchar_t) != 2;
161 XML_UNICODE_WCHAR_T was never meant to be used outside
162 of Windows; 4-byte wchar_t is common on Linux
163 (SF.net) #538 Start using -fno-strict-aliasing
164 (SF.net) #540 Support compilation against cloudlibc of CloudABI
165 Allow MinGW cross-compilation
166 (SF.net) #534 CMake: Introduce option "BUILD_doc" (enabled by default)
167 to bypass compilation of the xmlwf.1 man page
168 (SF.net) pr2 CMake: Introduce option "INSTALL" (enabled by default)
169 to bypass installation of expat files
170 CMake: Fix ninja support
171 Autotools: Add parameters --enable-xml-context [COUNT]
172 and --disable-xml-context; default of context of 1024
173 bytes enabled unchanged
174 #14 Drop AmigaOS 4.x code and includes
175 #14 Drop ancient build systems:
176 * Borland C++ Builder
180 * Pre-X Mac OS (MPW Makefile)
181 If you happen to rely on some of these, please get in
182 touch for joining with maintenance.
183 #10 Move from WIN32 to _WIN32
184 #13 Fix "make run-xmltest" order instability
185 Address compile warnings
186 Bump version info from 7:2:6 to 7:3:6
190 #1 Migrate from SourceForge to GitHub (except downloads):
191 https://github.com/libexpat/
192 #1 Re-create http://libexpat.org/ project website
193 Start utilizing Travis CI
206 Core Infrastructure Initiative
207 Mozilla Foundation (MOSS Track 3: Secure Open Source)
208 Radically Open Security
210 Release 2.2.0 Tue June 21 2016
212 #537 CVE-2016-0718 -- Fix crash on malformed input
213 CVE-2016-4472 -- Improve insufficient fix to CVE-2015-1283 /
214 CVE-2015-2716 introduced with Expat 2.1.1
215 #499 CVE-2016-5300 -- Use more entropy for hash initialization
216 than the original fix to CVE-2012-0876
217 #519 CVE-2012-6702 -- Resolve troublesome internal call to srand
218 that was introduced with Expat 2.1.0
219 when addressing CVE-2012-0876 (issue #496)
222 Fix uninitialized reads of size 1
223 (e.g. in little2_updatePosition)
224 Fix detection of UTF-8 character boundaries
227 #532 Fix compilation for Visual Studio 2010 (keyword "C99")
228 Autotools: Resolve use of "$<" to better support bmake
229 Autotools: Add QA script "qa.sh" (and make target "qa")
230 Autotools: Respect CXXFLAGS if given
231 Autotools: Fix "make run-xmltest"
232 Autotools: Have "make run-xmltest" check for expected output
233 p90 CMake: Fix static build (BUILD_shared=OFF) on Windows
234 #536 CMake: Add soversion, support -DNO_SONAME=yes to bypass
235 #323 CMake: Add suffix "d" to differentiate debug from release
236 CMake: Define WIN32 with CMake on Windows
237 Annotate memory allocators for GCC
238 Address all currently known compile warnings
239 Make sure that API symbols remain visible despite
241 Remove executable flag from source files
242 Resolve COMPILED_FROM_DSP in favor of WIN32
259 Release 2.1.1 Sat March 12 2016
261 #582: CVE-2015-1283 - Multiple integer overflows in XML_GetBuffer
264 #502: Fix potential null pointer dereference
265 #520: Symbol XML_SetHashSalt was not exported
266 Output of "xmlwf -h" was incomplete
269 #503: Document behavior of calling XML_SetHashSalt with salt 0
270 Minor improvements to man page xmlwf(1)
271 Improvements to the experimental CMake build system
272 libtool now invoked with --verbose
274 Release 2.1.0 Sat March 24 2012
276 #2958794: CVE-2012-1148 - Memory leak in poolGrow.
277 #2895533: CVE-2012-1147 - Resource leak in readfilemap.c.
278 #3496608: CVE-2012-0876 - Hash DOS attack.
279 #2894085: CVE-2009-3560 - Buffer over-read and crash in big2_toUtf8().
280 #1990430: CVE-2009-3720 - Parser crash with special UTF-8 sequences.
282 #1742315: Harmful XML_ParserCreateNS suggestion.
283 #1785430: Expat build fails on linux-amd64 with gcc version>=4.1 -O3.
284 #1983953, 2517952, 2517962, 2649838:
285 Build modifications using autoreconf instead of buildconf.sh.
286 #2815947, #2884086: OBJEXT and EXEEXT support while building.
287 #2517938: xmlwf should return non-zero exit status if not well-formed.
288 #2517946: Wrong statement about XMLDecl in xmlwf.1 and xmlwf.sgml.
289 #2855609: Dangling positionPtr after error.
290 #2990652: CMake support.
291 #3010819: UNEXPECTED_STATE with a trailing "%" in entity value.
292 #3206497: Unitialized memory returned from XML_Parse.
293 #3287849: make check fails on mingw-w64.
295 #1749198: pkg-config support.
296 #3010222: Fix for bug #3010819.
297 #3312568: CMake support.
298 #3446384: Report byte offsets for attr names and values.
299 - New Features / API changes:
300 Added new API member XML_SetHashSalt() that allows setting an initial
301 value (salt) for hash calculations. This is part of the fix for
302 bug #3496608 to randomize hash parameters.
303 When compiled with XML_ATTR_INFO defined, adds new API member
304 XML_GetAttributeInfo() that allows retrieving the byte
305 offsets for attribute names and values (patch #3446384).
306 Added CMake build system.
307 See bug #2990652 and patch #3312568.
308 Added run-benchmark target to Makefile.in - relies on testdata module
309 present in the same relative location as in the repository.
311 Release 2.0.1 Tue June 5 2007
312 - Fixed bugs #1515266, #1515600: The character data handler's calling
313 of XML_StopParser() was not handled properly; if the parser was
314 stopped and the handler set to NULL, the parser would segfault.
315 - Fixed bug #1690883: Expat failed on EBCDIC systems as it assumed
316 some character constants to be ASCII encoded.
317 - Minor cleanups of the test harness.
318 - Fixed xmlwf bug #1513566: "out of memory" error on file size zero.
319 - Fixed outline.c bug #1543233: missing a final XML_ParserFree() call.
320 - Fixes and improvements for Windows platform:
321 bugs #1409451, #1476160, #1548182, #1602769, #1717322.
322 - Build fixes for various platforms:
323 HP-UX, Tru64, Solaris 9: patch #1437840, bug #1196180.
324 All Unix: #1554618 (refreshed config.sub/config.guess).
325 #1490371, #1613457: support both, DESTDIR and INSTALL_ROOT,
326 without relying on GNU-Make specific features.
327 #1647805: Patched configure.in to work better with Intel compiler.
328 - Fixes to Makefile.in to have make check work correctly:
329 bugs #1408143, #1535603, #1536684.
330 - Added Open Watcom support: patch #1523242.
332 Release 2.0.0 Wed Jan 11 2006
333 - We no longer use the "check" library for C unit testing; we
334 always use the (partial) internal implementation of the API.
335 - Report XML_NS setting via XML_GetFeatureList().
336 - Fixed headers for use from C++.
337 - XML_GetCurrentLineNumber() and XML_GetCurrentColumnNumber()
338 now return unsigned integers.
339 - Added XML_LARGE_SIZE switch to enable 64-bit integers for
340 byte indexes and line/column numbers.
341 - Updated to use libtool 1.5.22 (the most recent).
342 - Added support for AmigaOS.
343 - Some mostly minor bug fixes. SF issues include: #1006708,
344 #1021776, #1023646, #1114960, #1156398, #1221160, #1271642.
346 Release 1.95.8 Fri Jul 23 2004
347 - Major new feature: suspend/resume. Handlers can now request
348 that a parse be suspended for later resumption or aborted
349 altogether. See "Temporarily Stopping Parsing" in the
350 documentation for more details.
351 - Some mostly minor bug fixes, but compilation should no
352 longer generate warnings on most platforms. SF issues
353 include: #827319, #840173, #846309, #888329, #896188, #923913,
354 #928113, #961698, #985192.
356 Release 1.95.7 Mon Oct 20 2003
357 - Fixed enum XML_Status issue (reported on SourceForge many
358 times), so compilers that are properly picky will be happy.
359 - Introduced an XMLCALL macro to control the calling
360 convention used by the Expat API; this macro should be used
361 to annotate prototypes and definitions of callback
362 implementations in code compiled with a calling convention
363 other than the default convention for the host platform.
364 - Improved ability to build without the configure-generated
365 expat_config.h header. This is useful for applications
366 which embed Expat rather than linking in the library.
367 - Fixed a variety of bugs: see SF issues #458907, #609603,
368 #676844, #679754, #692878, #692964, #695401, #699323, #699487,
370 - Improved hash table lookups.
371 - Added more regression tests and improved documentation.
373 Release 1.95.6 Tue Jan 28 2003
374 - Added XML_FreeContentModel().
375 - Added XML_MemMalloc(), XML_MemRealloc(), XML_MemFree().
376 - Fixed a variety of bugs: see SF issues #615606, #616863,
377 #618199, #653180, #673791.
378 - Enhanced the regression test suite.
379 - Man page improvements: includes SF issue #632146.
381 Release 1.95.5 Fri Sep 6 2002
382 - Added XML_UseForeignDTD() for improved SAX2 support.
383 - Added XML_GetFeatureList().
384 - Defined XML_Bool type and the values XML_TRUE and XML_FALSE.
385 - Use an incomplete struct instead of a void* for the parser
387 - Fixed UTF-8 decoding bug that caused legal UTF-8 to be rejected.
388 - Finally fixed bug where default handler would report DTD
389 events that were already handled by another handler.
390 Initial patch contributed by Darryl Miles.
391 - Removed unnecessary DllMain() function that caused static
392 linking into a DLL to be difficult.
393 - Added VC++ projects for building static libraries.
394 - Reduced line-length for all source code and headers to be
395 no longer than 80 characters, to help with AS/400 support.
396 - Reduced memory copying during parsing (SF patch #600964).
397 - Fixed a variety of bugs: see SF issues #580793, #434664,
398 #483514, #580503, #581069, #584041, #584183, #584832, #585537,
399 #596555, #596678, #598352, #598944, #599715, #600479, #600971.
401 Release 1.95.4 Fri Jul 12 2002
402 - Added support for VMS, contributed by Craig Berry. See
403 vms/README.vms for more information.
404 - Added Mac OS (classic) support, with a makefile for MPW,
405 contributed by Thomas Wegner and Daryle Walker.
406 - Added Borland C++ Builder 5 / BCC 5.5 support, contributed
407 by Patrick McConnell (SF patch #538032).
408 - Fixed a variety of bugs: see SF issues #441449, #563184,
409 #564342, #566334, #566901, #569461, #570263, #575168, #579196.
410 - Made skippedEntityHandler conform to SAX2 (see source comment)
411 - Re-implemented WFC: Entity Declared from XML 1.0 spec and
412 added a new error "entity declared in parameter entity":
413 see SF bug report #569461 and SF patch #578161
414 - Re-implemented section 5.1 from XML 1.0 spec:
415 see SF bug report #570263 and SF patch #578161
417 Release 1.95.3 Mon Jun 3 2002
418 - Added a project to the MSVC workspace to create a wchar_t
419 version of the library; the DLLs are named libexpatw.dll.
420 - Changed the name of the Windows DLLs from expat.dll to
421 libexpat.dll; this fixes SF bug #432456.
422 - Added the XML_ParserReset() API function.
423 - Fixed XML_SetReturnNSTriplet() to work for element names.
424 - Made the XML_UNICODE builds usable (thanks, Karl!).
425 - Allow xmlwf to read from standard input.
426 - Install a man page for xmlwf on Unix systems.
427 - Fixed many bugs; see SF bug reports #231864, #461380, #464837,
428 #466885, #469226, #477667, #484419, #487840, #494749, #496505,
429 #547350. Other bugs which we can't test as easily may also
430 have been fixed, especially in the area of build support.
432 Release 1.95.2 Fri Jul 27 2001
433 - More changes to make MSVC happy with the build; add a single
434 workspace to support both the library and xmlwf application.
435 - Added a Windows installer for Windows users; includes
437 - Added compile-time constants that can be used to determine the
439 - Removed a lot of GNU-specific dependencies to aide portability
440 among the various Unix flavors.
441 - Fix the UTF-8 BOM bug.
442 - Cleaned up warning messages for several compilers.
443 - Added the -Wall, -Wstrict-prototypes options for GCC.
445 Release 1.95.1 Sun Oct 22 15:11:36 EDT 2000
446 - Changes to get expat to build under Microsoft compiler
447 - Removed all aborts and instead return an UNEXPECTED_STATE error.
448 - Fixed a bug where a stray '%' in an entity value would cause an
450 - Defined XML_SetEndNamespaceDeclHandler. Thanks to Darryl Miles for
451 finding this oversight.
452 - Changed default patterns in lib/Makefile.in to fit non-GNU makes
453 Thanks to robin@unrated.net for reporting and providing an
455 - The reference had the wrong label for XML_SetStartNamespaceDecl.
456 Reported by an anonymous user.
458 Release 1.95.0 Fri Sep 29 2000
459 - XML_ParserCreate_MM
460 Allows you to set a memory management suite to replace the
461 standard malloc,realloc, and free.
462 - XML_SetReturnNSTriplet
463 If you turn this feature on when namespace processing is in
464 effect, then qualified, prefixed element and attribute names
465 are returned as "uri|name|prefix" where '|' is whatever
466 separator character is used in namespace processing.
467 - Merged in features from perl-expat
468 o XML_SetElementDeclHandler
469 o XML_SetAttlistDeclHandler
470 o XML_SetXmlDeclHandler
471 o XML_SetEntityDeclHandler
472 o StartDoctypeDeclHandler takes 3 additional parameters:
473 sysid, pubid, has_internal_subset
474 o Many paired handler setters (like XML_SetElementHandler)
475 now have corresponding individual handler setters
476 o XML_GetInputContext for getting the input context of
477 the current parse position.
478 - Added reference material
479 - Packaged into a distribution that builds a sharable library