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 2.4.3 Sun January 16 2022
7 #531 #534 CVE-2021-45960 -- Fix issues with left shifts by >=29 places
9 a) realloc acting as free
10 b) realloc allocating too few bytes
12 depending on architecture and precise value
13 for XML documents with >=2^27+1 prefixed attributes
14 on a single XML tag a la
15 "<r xmlns:a='[..]' a:a123='[..]' [..] />"
16 where XML_ParserCreateNS is used to create the parser
17 (which needs argument "-n" when running xmlwf).
18 Impact is denial of service, or more.
19 #532 #538 CVE-2021-46143 (ZDI-CAN-16157) -- Fix integer overflow
20 on variable m_groupSize in function doProlog leading
21 to realloc acting as free.
22 Impact is denial of service or more.
23 #539 CVE-2022-22822 to CVE-2022-22827 -- Prevent integer overflows
24 near memory allocation at multiple places. Mitre assigned
25 a dedicated CVE for each involved internal C function:
26 - CVE-2022-22822 for function addBinding
27 - CVE-2022-22823 for function build_model
28 - CVE-2022-22824 for function defineAttribute
29 - CVE-2022-22825 for function lookup
30 - CVE-2022-22826 for function nextScaffoldPart
31 - CVE-2022-22827 for function storeAtts
32 Impact is denial of service or more.
35 #535 CMake: Make call to file(GENERATE [..]) work for CMake <3.19
36 #541 Autotools|CMake: MinGW: Make run.sh(.in) work for Cygwin
37 and MSYS2 by not going through Wine on these platforms
38 #527 #528 Address compiler warnings
39 #533 #543 Version info bumped from 9:2:8 to 9:3:8;
40 see https://verbump.de/ for what these numbers do
43 #536 CI: Check for realistic minimum CMake version
44 #529 #539 CI: Cover compilation with -m32
45 #529 CI: Store coverage reports as artifacts for download
46 #528 CI: Upgrade Clang from 11 to 13
55 Trend Micro Zero Day Initiative
57 Release 2.4.2 Sun December 19 2021
59 #509 #510 Link againgst libm for function "isnan"
60 #513 #514 Include expat_config.h as early as possible
61 #498 Autotools: Include files with release archives:
64 #507 #519 Autotools: Sync CMake templates
65 #495 #524 CMake: MinGW: Fix pkg-config section "Libs" for
66 - non-release build types (e.g. -DCMAKE_BUILD_TYPE=Debug)
67 - multi-config CMake generators (e.g. Ninja Multi-Config)
68 #502 #503 docs: Document that function XML_GetBuffer may return NULL
69 when asking for a buffer of 0 (zero) bytes size
70 #522 #523 docs: Fix return value docs for both
71 XML_SetBillionLaughsAttackProtection* functions
72 #525 #526 Version info bumped from 9:1:8 to 9:2:8;
73 see https://verbump.de/ for what these numbers do
80 Release 2.4.1 Sun May 23 2021
82 #488 #490 Autotools: Fix installed header expat_config.h for multilib
83 systems; regression introduced in 2.4.0 by pull request #486
86 #491 #492 Version info bumped from 9:0:8 to 9:1:8;
87 see https://verbump.de/ for what these numbers do
90 Gentoo's QA check "multilib_check_headers"
92 Release 2.4.0 Sun May 23 2021
94 #34 #466 #484 CVE-2013-0340/CWE-776 -- Protect against billion laughs attacks
95 (denial-of-service; flavors targeting CPU time or RAM or both,
96 leveraging general entities or parameter entities or both)
97 by tracking and limiting the input amplification factor
98 (<amplification> := (<direct> + <indirect>) / <direct>).
99 By conservative default, amplification up to a factor of 100.0
100 is tolerated and rejection only starts after 8 MiB of output bytes
101 (=<direct> + <indirect>) have been processed.
102 The fix adds the following to the API:
103 - A new error code XML_ERROR_AMPLIFICATION_LIMIT_BREACH to
104 signals this specific condition.
105 - Two new API functions ..
106 - XML_SetBillionLaughsAttackProtectionMaximumAmplification and
107 - XML_SetBillionLaughsAttackProtectionActivationThreshold
108 .. to further tighten billion laughs protection parameters
109 when desired. Please see file "doc/reference.html" for details.
110 If you ever need to increase the defaults for non-attack XML
111 payload, please file a bug report with libexpat.
112 - Two new XML_FEATURE_* constants ..
113 - that can be queried using the XML_GetFeatureList function, and
114 - that are shown in "xmlwf -v" output.
115 - Two new environment variable switches ..
116 - EXPAT_ACCOUNTING_DEBUG=(0|1|2|3) and
117 - EXPAT_ENTITY_DEBUG=(0|1)
118 .. for runtime debugging of accounting and entity processing.
119 Specific behavior of these values may change in the future.
120 - Two new command line arguments "-a FACTOR" and "-b BYTES"
121 for xmlwf to further tighten billion laughs protection
122 parameters when desired.
123 If you ever need to increase the defaults for non-attack XML
124 payload, please file a bug report with libexpat.
127 #332 #470 For (non-default) compilation with -DEXPAT_MIN_SIZE=ON (CMake)
128 or CPPFLAGS=-DXML_MIN_SIZE (GNU Autotools): Fix segfault
129 for UTF-16 payloads containing CDATA sections.
130 #485 #486 Autotools: Fix generated CMake files for non-64bit and
131 non-Linux platforms (e.g. macOS and MinGW in particular)
132 that were introduced with release 2.3.0
135 #468 #469 xmlwf: Improve help output and the xmlwf man page
136 #463 xmlwf: Improve maintainability through some refactoring
137 #477 xmlwf: Fix man page DocBook validity
138 #458 #459 CMake: Support absolute paths for both CMAKE_INSTALL_LIBDIR
139 and CMAKE_INSTALL_INCLUDEDIR
140 #471 #481 CMake: Add support for standard variable BUILD_SHARED_LIBS
141 #457 Unexpose symbol _INTERNAL_trim_to_complete_utf8_characters
142 #467 Resolve macro HAVE_EXPAT_CONFIG_H
143 #472 Delete unused legacy helper file "conftools/PrintPath"
144 #473 #483 Improve attribution
145 #464 #465 #477 doc/reference.html: Fix XHTML validity
146 #475 #478 doc/reference.html: Replace the 90s look by OK.css
147 #479 Version info bumped from 8:0:7 to 9:0:8
148 due to addition of new symbols and error codes;
149 see https://verbump.de/ for what these numbers do
152 #456 CI: Enable periodic runs
153 #457 CI: Start covering the list of exported symbols
154 #474 CI: Isolate coverage task
155 #476 #482 CI: Adapt to breaking changes in image "ubuntu-18.04"
156 #477 CI: Cover well-formedness and DocBook/XHTML validity
157 of doc/reference.html and doc/xmlwf.xml
171 Release 2.3.0 Thu March 25 2021
173 #438 When calling XML_ParseBuffer without a prior successful call to
174 XML_GetBuffer as a user, no longer trigger undefined behavior
175 (by adding an integer to a NULL pointer) but rather return
176 XML_STATUS_ERROR and set the error code to (new) code
177 XML_ERROR_NO_BUFFER. Found by UBSan (UndefinedBehaviorSanitizer)
178 of Clang 11 (but not Clang 9).
179 #444 xmlwf: Exit status 2 was used for both:
180 - malformed input files (documented) and
181 - invalid command-line arguments (undocumented).
182 The case of invalid command-line arguments now
183 has its own exit status 4, resolving the ambiguity.
186 #439 xmlwf: Add argument -k to allow continuing after
188 #439 xmlwf: Add section about exit status to the -h help output
189 #422 #426 #447 Windows: Drop support for Visual Studio <=14.0/2015
190 #434 Windows: CMake: Detect unsupported Visual Studio at
191 configure time (rather than at compile time)
192 #382 #428 testrunner: Make verbose mode (argument "-v") report
193 about passed tests, and make default mode report about
195 #442 CMake: Call "enable_language(CXX)" prior to tinkering
196 with CMAKE_CXX_* variables
197 #448 Document use of libexpat from a CMake-based project
198 #451 Autotools: Install CMake files as generated by CMake 3.19.6
199 so that users with "find_package(expat [..] CONFIG [..])"
200 are served on distributions that are *not* using the CMake
201 build system inside for libexpat packaging
202 #436 #437 Autotools: Drop obsolescent macro AC_HEADER_STDC
203 #450 #452 Autotools: Resolve use of obsolete macro AC_CONFIG_HEADER
204 #441 Address compiler warnings
205 #443 Version info bumped from 7:12:6 to 8:0:7
206 due to addition of error code XML_ERROR_NO_BUFFER
207 (see https://verbump.de/ for what these numbers do)
210 #435 #446 Replace Travis CI by GitHub Actions
218 Clang LeakSan, Clang 11 UBSan and the Clang team
220 Release 2.2.10 Sat October 3 2020
222 #390 #395 #398 Fix undefined behavior during parsing caused by
223 pointer arithmetic with NULL pointers
224 #404 #405 Fix reading uninitialized variable during parsing
225 #406 xmlwf: Add missing check for malloc NULL return
228 #396 Windows: Drop support for Visual Studio <=8.0/2005
229 #409 Windows: Add missing file "Changes" to the installer
230 to fix compilation with CMake from installed sources
231 #403 xmlwf: Document exit codes in xmlwf manpage and
232 exit with code 3 (rather than code 1) for output errors
233 when used with "-d DIRECTORY"
234 #356 #359 MinGW: Provide declaration of rand_s for mingwrt <5.3.0
235 #383 #392 Autotools: Use -Werror while configure tests the compiler
236 for supported compile flags to avoid false positives
237 #383 #393 #394 Autotools: Improve handling of user (C|CPP|CXX|LD)FLAGS,
238 e.g. ensure that they have the last word over flags added
239 while running ./configure
240 #360 CMake: Create libexpatw.{dll,so} and expatw.pc (with emphasis
241 on suffix "w") with -DEXPAT_CHAR_TYPE=(ushort|wchar_t)
242 #360 CMake: Detect and deny unsupported build combinations
243 involving -DEXPAT_CHAR_TYPE=(ushort|wchar_t)
244 #360 CMake: Install pre-compiled shipped xmlwf.1 manpage in case
245 of -DEXPAT_BUILD_DOCS=OFF
246 #375 #380 #419 CMake: Fix use of Expat by means of add_subdirectory
247 #407 #408 CMake: Keep expat target name constant at "expat"
248 (i.e. refrain from using the target name to control
249 build artifact filenames)
250 #385 CMake: Fix compilation with -DEXPAT_SHARED_LIBS=OFF for
252 CMake: Expose man page compilation as target "xmlwf-manpage"
253 #413 #414 CMake: Introduce option EXPAT_BUILD_PKGCONFIG
254 to control generation of pkg-config file "expat.pc"
255 #424 CMake: Add minimalistic support for building binary packages
256 with CMake target "package"; based on CPack
257 #366 CMake: Add option -DEXPAT_OSSFUZZ_BUILD=(ON|OFF) with
258 default OFF to build fuzzer code against OSS-Fuzz and
259 related environment variable LIB_FUZZING_ENGINE
260 #354 Fix testsuite for -DEXPAT_DTD=OFF and -DEXPAT_NS=OFF, each
262 #356 #412 Address compiler warnings
263 #368 #369 Address pngcheck warnings with doc/*.png images
264 #425 Version info bumped from 7:11:6 to 7:12:6
279 Cppcheck 2.0 and the Cppcheck team
281 Release 2.2.9 Wed September 25 2019
283 examples: Drop executable bits from elements.c
284 #349 Windows: Change the name of the Windows DLLs from expat*.dll
285 to libexpat*.dll once more (regression from 2.2.8, first
286 fixed in 1.95.3, issue #61 on SourceForge today,
287 was issue #432456 back then); needs a fix due
288 case-insensitive file systems on Windows and the fact that
289 Perl's XML::Parser::Expat compiles into Expat.dll.
290 #347 Windows: Only define _CRT_RAND_S if not defined
291 Version info bumped from 7:10:6 to 7:11:6
296 Release 2.2.8 Fri September 13 2019
298 #317 #318 CVE-2019-15903 -- Fix heap overflow triggered by
299 XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber),
300 and deny internal entities closing the doctype;
301 fixed in commit c20b758c332d9a13afbbb276d30db1d183a85d43
304 #240 Fix cases where XML_StopParser did not have any effect
305 when called from inside of an end element handler
306 #341 xmlwf: Fix exit code for operation without "-d DIRECTORY";
307 previously, only "-d DIRECTORY" would give you a proper
309 # xmlwf -d . <<<'<not well-formed>' 2>/dev/null ; echo $?
311 # xmlwf <<<'<not well-formed>' 2>/dev/null ; echo $?
313 Now both cases return exit code 2.
316 #299 #302 Windows: Replace LoadLibrary hack to access
317 unofficial API function SystemFunction036 (RtlGenRandom)
318 by using official API function rand_s (needs WinXP+)
319 #325 Windows: Drop support for Visual Studio <=7.1/2003
320 and document supported compilers in README.md
321 #286 Windows: Remove COM code from xmlwf; in case it turns
322 out needed later, there will be a dedicated repository
323 below https://github.com/libexpat/ for that code
324 #322 Windows: Remove explicit MSVC solution and project files.
325 You can generate Visual Studio solution files through
326 CMake, e.g.: cmake -G"Visual Studio 15 2017" .
327 #338 xmlwf: Make "xmlwf -h" help output more friendly
328 #339 examples: Improve elements.c
329 #244 #264 Autotools: Add argument --enable-xml-attr-info
330 #239 #301 Autotools: Add arguments
334 --without-sys-getrandom
335 #312 #343 Autotools: Fix linking issues with "./configure LD=clang"
336 Autotools: Fix "make run-xmltest" for out-of-source builds
337 #329 #336 CMake: Pull all options from Expat <=2.2.7 into namespace
338 prefix EXPAT_ with the exception of DOCBOOK_TO_MAN:
339 - BUILD_doc -> EXPAT_BUILD_DOCS (plural)
340 - BUILD_examples -> EXPAT_BUILD_EXAMPLES
341 - BUILD_shared -> EXPAT_SHARED_LIBS
342 - BUILD_tests -> EXPAT_BUILD_TESTS
343 - BUILD_tools -> EXPAT_BUILD_TOOLS
344 - DOCBOOK_TO_MAN -> DOCBOOK_TO_MAN (unchanged)
345 - INSTALL -> EXPAT_ENABLE_INSTALL
346 - MSVC_USE_STATIC_CRT -> EXPAT_MSVC_STATIC_CRT
347 - USE_libbsd -> EXPAT_WITH_LIBBSD
348 - WARNINGS_AS_ERRORS -> EXPAT_WARNINGS_AS_ERRORS
349 - XML_CONTEXT_BYTES -> EXPAT_CONTEXT_BYTES
350 - XML_DEV_URANDOM -> EXPAT_DEV_URANDOM
351 - XML_DTD -> EXPAT_DTD
353 - XML_UNICODE -> EXPAT_CHAR_TYPE=ushort (!)
354 - XML_UNICODE_WCHAR_T -> EXPAT_CHAR_TYPE=wchar_t (!)
355 #244 #264 CMake: Add argument -DEXPAT_ATTR_INFO=(ON|OFF),
357 #326 CMake: Add argument -DEXPAT_LARGE_SIZE=(ON|OFF),
359 #328 CMake: Add argument -DEXPAT_MIN_SIZE=(ON|OFF),
361 #239 #277 CMake: Add arguments
362 -DEXPAT_WITH_GETRANDOM=(ON|OFF|AUTO), default AUTO
363 -DEXPAT_WITH_SYS_GETRANDOM=(ON|OFF|AUTO), default AUTO
364 #326 CMake: Install expat_config.h to include directory
365 #326 CMake: Generate and install configuration files for
366 future find_package(expat [..] CONFIG [..])
367 CMake: Now produces a summary of applied configuration
368 CMake: Require C++ compiler only when tests are enabled
369 #330 CMake: Fix compilation for 16bit character types,
370 i.e. ex -DXML_UNICODE=ON (and ex -DXML_UNICODE_WCHAR_T=ON)
371 #265 CMake: Fix linking with MinGW
372 #330 CMake: Add full support for MinGW; to enable, use
373 -DCMAKE_TOOLCHAIN_FILE=[expat]/cmake/mingw-toolchain.cmake
374 #330 CMake: Port "make run-xmltest" from GNU Autotools to CMake
375 #316 CMake: Windows: Make binary postfix match MSVC
377 New: expat[w][d][MD|MT].lib
378 CMake: Migrate files from Windows to Unix line endings
379 #308 CMake: Integrate OSS-Fuzz fuzzers, option
380 -DEXPAT_BUILD_FUZZERS=(ON|OFF), default OFF
381 #14 Drop an OpenVMS support leftover
384 #313 #331 #333 Address compiler warnings
386 #284 #285 Address cppcheck warnings
387 #294 #295 Address Clang Static Analyzer warnings
388 #24 #293 Mass-apply clang-format 9 (and ensure conformance during CI)
389 Version info bumped from 7:9:6 to 7:10:6
402 Release 2.2.7 Wed June 19 2019
404 #186 #262 CVE-2018-20843 -- Fix extraction of namespace prefixes from
405 XML names; XML names with multiple colons could end up in
406 the wrong namespace, and take a high amount of RAM and CPU
407 resources while processing, opening the door to
408 use for denial-of-service attacks
411 #195 #197 Autotools/CMake: Utilize -fvisibility=hidden to stop
412 exporting non-API symbols
413 #227 Autotools: Add --without-examples and --without-tests
414 #228 Autotools: Modernize configure.ac
415 #245 #246 Autotools: Fix check for -fvisibility=hidden for Clang
416 #247 #248 Autotools: Fix compilation for lack of docbook2x-man
417 #236 #258 Autotools: Produce .tar.{gz,lz,xz} release archives
418 #212 CMake: Make libdir of pkgconfig expat.pc support multilib
419 #158 #263 CMake: Build man page in PROJECT_BINARY_DIR not _SOURCE_DIR
420 #219 Remove fallback to bcopy, assume that memmove(3) exists
421 #257 Use portable "/usr/bin/env bash" shebang (e.g. for OpenBSD)
422 #243 Windows: Fix syntax of .def module definition files
423 Version info bumped from 7:8:6 to 7:9:6
437 Release 2.2.6 Sun August 12 2018
439 #170 #206 Avoid doing arithmetic with NULL pointers in XML_GetBuffer
440 #204 #205 Fix 2.2.5 regression with suspend-resume while parsing
441 a document like '<root/>'
444 #165 #168 Autotools: Fix docbook-related configure syntax error
445 #166 Autotools: Avoid grep option `-q` for Solaris
446 #167 Autotools: Support
447 ./configure DOCBOOK_TO_MAN="xmlto man --skip-validation"
448 #159 #167 Autotools: Support DOCBOOK_TO_MAN command which produces
449 xmlwf.1 rather than XMLWF.1; also covers case insensitive
451 #181 Autotools: Drop -rpath option passed to libtool
452 #188 Autotools: Detect and deny SGML docbook2man as ours is XML
453 #188 Autotools/CMake: Support command db2x_docbook2man as well
454 #174 CMake: Introduce option WARNINGS_AS_ERRORS, defaults to OFF
455 #184 #185 CMake: Introduce option MSVC_USE_STATIC_CRT, defaults to OFF
456 #207 #208 CMake: Introduce option XML_UNICODE and XML_UNICODE_WCHAR_T,
457 both defaulting to OFF
458 #175 CMake: Prefer check_symbol_exists over check_function_exists
459 #176 CMake: Create the same pkg-config file as with GNU Autotools
460 #178 #179 CMake: Use GNUInstallDirs module to set proper defaults for
462 #208 CMake: Utilize expat_config.h.cmake for XML_DEV_URANDOM
463 #180 Windows: Fix compilation of test suite for Visual Studio 2008
464 #131 #173 #202 Address compiler warnings
465 #187 #190 #200 Fix miscellaneous typos
466 Version info bumped from 7:7:6 to 7:8:6
484 Release 2.2.5 Tue October 31 2017
486 #8 If the parser runs out of memory, make sure its internal
487 state reflects the memory it actually has, not the memory
489 #11 The default handler wasn't being called when it should for
490 a SYSTEM or PUBLIC doctype if an entity declaration handler
492 #137 #138 Fix a case of mistakenly reported parsing success where
493 XML_StopParser was called from an element handler
494 #162 Function XML_ErrorString was returning NULL rather than
495 a message for code XML_ERROR_INVALID_ARGUMENT
496 introduced with release 2.2.1
499 #106 xmlwf: Add argument -N adding notation declarations
500 #75 #106 Test suite: Resolve expected failure cases where xmlwf
501 output was incomplete
502 #127 Windows: Fix test suite compilation
503 #126 #127 Windows: Fix compilation for Visual Studio 2012
504 Windows: Upgrade shipped project files to Visual Studio 2017
505 #33 #132 tests: Mass-fix compilation for XML_UNICODE_WCHAR_T
506 #129 examples: Fix compilation for XML_UNICODE_WCHAR_T
507 #130 benchmark: Fix compilation for XML_UNICODE_WCHAR_T
508 #144 xmlwf: Fix compilation for XML_UNICODE_WCHAR_T; still needs
509 Windows or MinGW for 2-byte wchar_t
510 #9 Address two Clang Static Analyzer false positives
511 #59 Resolve troublesome macros hiding parser struct membership
512 and dereferencing that pointer
513 #6 Resolve superfluous internal malloc/realloc switch
514 #153 #155 Improve docbook2x-man detection
515 #160 Undefine NDEBUG in the test suite (rather than rejecting it)
516 #161 Address compiler warnings
517 Version info bumped from 7:6:6 to 7:7:6
522 José Gutiérrez de la Concha
523 Pedro Monreal Gonzalez
528 Core Infrastructure Initiative
530 Release 2.2.4 Sat August 19 2017
532 #115 Fix copying of partial characters for UTF-8 input
535 #109 Fix "make check" for non-x86 architectures that default
536 to unsigned type char (-128..127 rather than 0..255)
537 #109 coverage.sh: Cover -funsigned-char
538 Autotools: Introduce --without-xmlwf argument
539 #65 Autotools: Replace handwritten Makefile with GNU Automake
540 #43 CMake: Auto-detect high quality entropy extractors, add new
541 option USE_libbsd=ON to use arc4random_buf of libbsd
542 #74 CMake: Add -fno-strict-aliasing only where supported
543 #114 CMake: Always honor manually set BUILD_* options
544 #114 CMake: Compile man page if docbook2x-man is available, only
545 #117 Include file tests/xmltest.log.expected in source tarball
546 (required for "make run-xmltest")
547 #117 Include (existing) Visual Studio 2013 files in source tarball
548 Improve test suite error output
549 #111 Fix some typos in documentation
550 Version info bumped from 7:5:6 to 7:6:6
558 Release 2.2.3 Wed August 2 2017
560 #82 CVE-2017-11742 -- Windows: Fix DLL hijacking vulnerability
561 using Steve Holme's LoadLibrary wrapper for/of cURL
564 #85 Fix a dangling pointer issue related to realloc
567 Increase code coverage
568 #91 Linux: Allow getrandom to fail if nonblocking pool has not
569 yet been initialized and read /dev/urandom then, instead.
570 This is in line with what recent Python does.
571 #81 Pre-10.7/Lion macOS: Support entropy from arc4random
572 #86 Check that a UTF-16 encoding in an XML declaration has the
574 #4 #5 #7 Recover correctly when some reallocations fail
575 Repair "./configure && make" for systems without any
576 provider of high quality entropy
577 and try reading /dev/urandom on those
578 Ensure that user-defined character encodings have converter
579 functions when they are needed
580 Fix mis-leading description of argument -c in xmlwf.1
581 Rely on macro HAVE_ARC4RANDOM_BUF (rather than __CloudABI__)
583 #100 Fix use of SIPHASH_MAIN in siphash.h
584 #23 Test suite: Fix memory leaks
585 Version info bumped from 7:4:6 to 7:5:6
596 Core Infrastructure Initiative
598 Release 2.2.2 Wed July 12 2017
600 #43 Protect against compilation without any source of high
601 quality entropy enabled, e.g. with CMake build system;
602 commit ff0207e6076e9828e536b8d9cd45c9c92069b895
603 #60 Windows with _UNICODE:
604 Unintended use of LoadLibraryW with a non-wide string
605 resulted in failure to load advapi32.dll and degradation
606 in quality of used entropy when compiled with _UNICODE for
607 Windows; you can launch existing binaries with
608 EXPAT_ENTROPY_DEBUG=1 in the environment to inspect the
609 quality of entropy used during runtime; commits
610 * 95b95032f907ef1cd17ee7a9a1768010a825d61d
611 * 73a5a2e9c081f49f2d775cf7ced864158b68dc80
612 [MOX-006] Fix non-NULL parser parameter validation in XML_Parse;
613 resulted in NULL dereference, previously;
614 commit ac256dafdffc9622ab0dc2c62fcecb0dfcfa71fe
617 #69 Fix improper use of unsigned long long integer literals
620 #73 Start requiring a C99 compiler
621 #49 Fix "==" Bashism in configure script
622 #50 Fix too eager getrandom detection for Debian GNU/kFreeBSD
624 #51 Address lack of stdint.h in Visual Studio 2003 to 2008
625 #58 Address compile warnings
626 #68 Fix "./buildconf.sh && ./configure" for some versions
628 #72 CMake: Ease use of Expat in context of a parent project
629 with multiple CMakeLists.txt files
630 #72 CMake: Resolve mistaken executable permissions
631 #76 Address compile warning with -DNDEBUG (not recommended!)
632 #77 Address compile warning about macro redefinition
639 László Böszörményi
646 Radically Open Security
648 Release 2.2.1 Sat June 17 2017
650 CVE-2017-9233 -- External entity infinite loop DoS
651 Details: https://libexpat.github.io/doc/cve-2017-9233/
652 Commit c4bf96bb51dd2a1b0e185374362ee136fe2c9d7f
653 [MOX-002] CVE-2016-9063 -- Detect integer overflow; commit
654 d4f735b88d9932bd5039df2335eefdd0723dbe20
655 (Fixed version of existing downstream patches!)
656 (SF.net) #539 Fix regression from fix to CVE-2016-0718 cutting off
657 longer tag names; commits
658 * 896b6c1fd3b842f377d1b62135dccf0a579cf65d
659 * af507cef2c93cb8d40062a0abe43a4f4e9158fb2
660 #16 * 0dbbf43fdb20f593ddf4fa1ff67288000dd4a7fd
661 #25 More integer overflow detection (function poolGrow); commits
662 * 810b74e4703dcfdd8f404e3cb177d44684775143
663 * 44178553f3539ce69d34abee77a05e879a7982ac
664 [MOX-002] Detect overflow from len=INT_MAX call to XML_Parse; commits
665 * 4be2cb5afcc018d996f34bbbce6374b7befad47f
666 * 7e5b71b748491b6e459e5c9a1d090820f94544d8
667 [MOX-005] #30 Use high quality entropy for hash initialization:
668 * arc4random_buf on BSD, systems with libbsd
669 (when configured with --with-libbsd), CloudABI
670 * RtlGenRandom on Windows XP / Server 2003 and later
671 * getrandom on Linux 3.17+
672 In a way, that's still part of CVE-2016-5300.
673 https://github.com/libexpat/libexpat/pull/30/commits
674 [MOX-005] For the low quality entropy extraction fallback code,
675 the parser instance address can no longer leak, commit
676 04ad658bd3079dd15cb60fc67087900f0ff4b083
677 [MOX-003] Prevent use of uninitialised variable; commit
678 [MOX-004] a4dc944f37b664a3ca7199c624a98ee37babdb4b
679 Add missing parameter validation to public API functions
680 and dedicated error code XML_ERROR_INVALID_ARGUMENT:
681 [MOX-006] * NULL checks; commits
682 * d37f74b2b7149a3a95a680c4c4cd2a451a51d60a (merge/many)
683 * 9ed727064b675b7180c98cb3d4f75efba6966681
684 * 6a747c837c50114dfa413994e07c0ba477be4534
685 * Negative length (XML_Parse); commit
686 [MOX-002] 70db8d2538a10f4c022655d6895e4c3e78692e7f
687 [MOX-001] #35 Change hash algorithm to William Ahern's version of SipHash
688 to go further with fixing CVE-2012-0876.
689 https://github.com/libexpat/libexpat/pull/39/commits
692 #32 Fix sharing of hash salt across parsers;
693 relevant where XML_ExternalEntityParserCreate is called
694 prior to XML_Parse, in particular (e.g. FBReader)
695 #28 xmlwf: Auto-disable use of memory-mapping (and parsing
696 as a single chunk) for files larger than ~1 GB (2^30 bytes)
697 rather than failing with error "out of memory"
698 #3 Fix double free after malloc failure in DTD code; commit
699 7ae9c3d3af433cd4defe95234eae7dc8ed15637f
700 #17 Fix memory leak on parser error for unbound XML attribute
701 prefix with new namespaces defined in the same tag;
702 found by Google's OSS-Fuzz; commits
703 * 16f87daae5a16132e479e4f71862128c7a915c73
704 * b47dbc9745932c160893d433220e462bd605f8cd
705 xmlwf on Windows: Add missing calls to CloseHandle
708 #30 Introduced environment switch EXPAT_ENTROPY_DEBUG=1
709 for runtime debugging of entropy extraction
712 Increase code coverage
713 #33 Reject use of XML_UNICODE_WCHAR_T with sizeof(wchar_t) != 2;
714 XML_UNICODE_WCHAR_T was never meant to be used outside
715 of Windows; 4-byte wchar_t is common on Linux
716 (SF.net) #538 Start using -fno-strict-aliasing
717 (SF.net) #540 Support compilation against cloudlibc of CloudABI
718 Allow MinGW cross-compilation
719 (SF.net) #534 CMake: Introduce option "BUILD_doc" (enabled by default)
720 to bypass compilation of the xmlwf.1 man page
721 (SF.net) pr2 CMake: Introduce option "INSTALL" (enabled by default)
722 to bypass installation of expat files
723 CMake: Fix ninja support
724 Autotools: Add parameters --enable-xml-context [COUNT]
725 and --disable-xml-context; default of context of 1024
726 bytes enabled unchanged
727 #14 Drop AmigaOS 4.x code and includes
728 #14 Drop ancient build systems:
729 * Borland C++ Builder
733 * Pre-X Mac OS (MPW Makefile)
734 If you happen to rely on some of these, please get in
735 touch for joining with maintenance.
736 #10 Move from WIN32 to _WIN32
737 #13 Fix "make run-xmltest" order instability
738 Address compile warnings
739 Bump version info from 7:2:6 to 7:3:6
743 #1 Migrate from SourceForge to GitHub (except downloads):
744 https://github.com/libexpat/
745 #1 Re-create http://libexpat.org/ project website
746 Start utilizing Travis CI
759 Core Infrastructure Initiative
760 Mozilla Foundation (MOSS Track 3: Secure Open Source)
761 Radically Open Security
763 Release 2.2.0 Tue June 21 2016
765 #537 CVE-2016-0718 -- Fix crash on malformed input
766 CVE-2016-4472 -- Improve insufficient fix to CVE-2015-1283 /
767 CVE-2015-2716 introduced with Expat 2.1.1
768 #499 CVE-2016-5300 -- Use more entropy for hash initialization
769 than the original fix to CVE-2012-0876
770 #519 CVE-2012-6702 -- Resolve troublesome internal call to srand
771 that was introduced with Expat 2.1.0
772 when addressing CVE-2012-0876 (issue #496)
775 Fix uninitialized reads of size 1
776 (e.g. in little2_updatePosition)
777 Fix detection of UTF-8 character boundaries
780 #532 Fix compilation for Visual Studio 2010 (keyword "C99")
781 Autotools: Resolve use of "$<" to better support bmake
782 Autotools: Add QA script "qa.sh" (and make target "qa")
783 Autotools: Respect CXXFLAGS if given
784 Autotools: Fix "make run-xmltest"
785 Autotools: Have "make run-xmltest" check for expected output
786 p90 CMake: Fix static build (BUILD_shared=OFF) on Windows
787 #536 CMake: Add soversion, support -DNO_SONAME=yes to bypass
788 #323 CMake: Add suffix "d" to differentiate debug from release
789 CMake: Define WIN32 with CMake on Windows
790 Annotate memory allocators for GCC
791 Address all currently known compile warnings
792 Make sure that API symbols remain visible despite
794 Remove executable flag from source files
795 Resolve COMPILED_FROM_DSP in favor of WIN32
804 László Böszörményi
812 Release 2.1.1 Sat March 12 2016
814 #582: CVE-2015-1283 - Multiple integer overflows in XML_GetBuffer
817 #502: Fix potential null pointer dereference
818 #520: Symbol XML_SetHashSalt was not exported
819 Output of "xmlwf -h" was incomplete
822 #503: Document behavior of calling XML_SetHashSalt with salt 0
823 Minor improvements to man page xmlwf(1)
824 Improvements to the experimental CMake build system
825 libtool now invoked with --verbose
827 Release 2.1.0 Sat March 24 2012
829 #2958794: CVE-2012-1148 - Memory leak in poolGrow.
830 #2895533: CVE-2012-1147 - Resource leak in readfilemap.c.
831 #3496608: CVE-2012-0876 - Hash DOS attack.
832 #2894085: CVE-2009-3560 - Buffer over-read and crash in big2_toUtf8().
833 #1990430: CVE-2009-3720 - Parser crash with special UTF-8 sequences.
835 #1742315: Harmful XML_ParserCreateNS suggestion.
836 #1785430: Expat build fails on linux-amd64 with gcc version>=4.1 -O3.
837 #1983953, 2517952, 2517962, 2649838:
838 Build modifications using autoreconf instead of buildconf.sh.
839 #2815947, #2884086: OBJEXT and EXEEXT support while building.
840 #2517938: xmlwf should return non-zero exit status if not well-formed.
841 #2517946: Wrong statement about XMLDecl in xmlwf.1 and xmlwf.sgml.
842 #2855609: Dangling positionPtr after error.
843 #2990652: CMake support.
844 #3010819: UNEXPECTED_STATE with a trailing "%" in entity value.
845 #3206497: Uninitialized memory returned from XML_Parse.
846 #3287849: make check fails on mingw-w64.
848 #1749198: pkg-config support.
849 #3010222: Fix for bug #3010819.
850 #3312568: CMake support.
851 #3446384: Report byte offsets for attr names and values.
852 - New Features / API changes:
853 Added new API member XML_SetHashSalt() that allows setting an initial
854 value (salt) for hash calculations. This is part of the fix for
855 bug #3496608 to randomize hash parameters.
856 When compiled with XML_ATTR_INFO defined, adds new API member
857 XML_GetAttributeInfo() that allows retrieving the byte
858 offsets for attribute names and values (patch #3446384).
859 Added CMake build system.
860 See bug #2990652 and patch #3312568.
861 Added run-benchmark target to Makefile.in - relies on testdata module
862 present in the same relative location as in the repository.
864 Release 2.0.1 Tue June 5 2007
865 - Fixed bugs #1515266, #1515600: The character data handler's calling
866 of XML_StopParser() was not handled properly; if the parser was
867 stopped and the handler set to NULL, the parser would segfault.
868 - Fixed bug #1690883: Expat failed on EBCDIC systems as it assumed
869 some character constants to be ASCII encoded.
870 - Minor cleanups of the test harness.
871 - Fixed xmlwf bug #1513566: "out of memory" error on file size zero.
872 - Fixed outline.c bug #1543233: missing a final XML_ParserFree() call.
873 - Fixes and improvements for Windows platform:
874 bugs #1409451, #1476160, #1548182, #1602769, #1717322.
875 - Build fixes for various platforms:
876 HP-UX, Tru64, Solaris 9: patch #1437840, bug #1196180.
877 All Unix: #1554618 (refreshed config.sub/config.guess).
878 #1490371, #1613457: support both, DESTDIR and INSTALL_ROOT,
879 without relying on GNU-Make specific features.
880 #1647805: Patched configure.in to work better with Intel compiler.
881 - Fixes to Makefile.in to have make check work correctly:
882 bugs #1408143, #1535603, #1536684.
883 - Added Open Watcom support: patch #1523242.
885 Release 2.0.0 Wed Jan 11 2006
886 - We no longer use the "check" library for C unit testing; we
887 always use the (partial) internal implementation of the API.
888 - Report XML_NS setting via XML_GetFeatureList().
889 - Fixed headers for use from C++.
890 - XML_GetCurrentLineNumber() and XML_GetCurrentColumnNumber()
891 now return unsigned integers.
892 - Added XML_LARGE_SIZE switch to enable 64-bit integers for
893 byte indexes and line/column numbers.
894 - Updated to use libtool 1.5.22 (the most recent).
895 - Added support for AmigaOS.
896 - Some mostly minor bug fixes. SF issues include: #1006708,
897 #1021776, #1023646, #1114960, #1156398, #1221160, #1271642.
899 Release 1.95.8 Fri Jul 23 2004
900 - Major new feature: suspend/resume. Handlers can now request
901 that a parse be suspended for later resumption or aborted
902 altogether. See "Temporarily Stopping Parsing" in the
903 documentation for more details.
904 - Some mostly minor bug fixes, but compilation should no
905 longer generate warnings on most platforms. SF issues
906 include: #827319, #840173, #846309, #888329, #896188, #923913,
907 #928113, #961698, #985192.
909 Release 1.95.7 Mon Oct 20 2003
910 - Fixed enum XML_Status issue (reported on SourceForge many
911 times), so compilers that are properly picky will be happy.
912 - Introduced an XMLCALL macro to control the calling
913 convention used by the Expat API; this macro should be used
914 to annotate prototypes and definitions of callback
915 implementations in code compiled with a calling convention
916 other than the default convention for the host platform.
917 - Improved ability to build without the configure-generated
918 expat_config.h header. This is useful for applications
919 which embed Expat rather than linking in the library.
920 - Fixed a variety of bugs: see SF issues #458907, #609603,
921 #676844, #679754, #692878, #692964, #695401, #699323, #699487,
923 - Improved hash table lookups.
924 - Added more regression tests and improved documentation.
926 Release 1.95.6 Tue Jan 28 2003
927 - Added XML_FreeContentModel().
928 - Added XML_MemMalloc(), XML_MemRealloc(), XML_MemFree().
929 - Fixed a variety of bugs: see SF issues #615606, #616863,
930 #618199, #653180, #673791.
931 - Enhanced the regression test suite.
932 - Man page improvements: includes SF issue #632146.
934 Release 1.95.5 Fri Sep 6 2002
935 - Added XML_UseForeignDTD() for improved SAX2 support.
936 - Added XML_GetFeatureList().
937 - Defined XML_Bool type and the values XML_TRUE and XML_FALSE.
938 - Use an incomplete struct instead of a void* for the parser
940 - Fixed UTF-8 decoding bug that caused legal UTF-8 to be rejected.
941 - Finally fixed bug where default handler would report DTD
942 events that were already handled by another handler.
943 Initial patch contributed by Darryl Miles.
944 - Removed unnecessary DllMain() function that caused static
945 linking into a DLL to be difficult.
946 - Added VC++ projects for building static libraries.
947 - Reduced line-length for all source code and headers to be
948 no longer than 80 characters, to help with AS/400 support.
949 - Reduced memory copying during parsing (SF patch #600964).
950 - Fixed a variety of bugs: see SF issues #580793, #434664,
951 #483514, #580503, #581069, #584041, #584183, #584832, #585537,
952 #596555, #596678, #598352, #598944, #599715, #600479, #600971.
954 Release 1.95.4 Fri Jul 12 2002
955 - Added support for VMS, contributed by Craig Berry. See
956 vms/README.vms for more information.
957 - Added Mac OS (classic) support, with a makefile for MPW,
958 contributed by Thomas Wegner and Daryle Walker.
959 - Added Borland C++ Builder 5 / BCC 5.5 support, contributed
960 by Patrick McConnell (SF patch #538032).
961 - Fixed a variety of bugs: see SF issues #441449, #563184,
962 #564342, #566334, #566901, #569461, #570263, #575168, #579196.
963 - Made skippedEntityHandler conform to SAX2 (see source comment)
964 - Re-implemented WFC: Entity Declared from XML 1.0 spec and
965 added a new error "entity declared in parameter entity":
966 see SF bug report #569461 and SF patch #578161
967 - Re-implemented section 5.1 from XML 1.0 spec:
968 see SF bug report #570263 and SF patch #578161
970 Release 1.95.3 Mon Jun 3 2002
971 - Added a project to the MSVC workspace to create a wchar_t
972 version of the library; the DLLs are named libexpatw.dll.
973 - Changed the name of the Windows DLLs from expat.dll to
974 libexpat.dll; this fixes SF bug #432456.
975 - Added the XML_ParserReset() API function.
976 - Fixed XML_SetReturnNSTriplet() to work for element names.
977 - Made the XML_UNICODE builds usable (thanks, Karl!).
978 - Allow xmlwf to read from standard input.
979 - Install a man page for xmlwf on Unix systems.
980 - Fixed many bugs; see SF bug reports #231864, #461380, #464837,
981 #466885, #469226, #477667, #484419, #487840, #494749, #496505,
982 #547350. Other bugs which we can't test as easily may also
983 have been fixed, especially in the area of build support.
985 Release 1.95.2 Fri Jul 27 2001
986 - More changes to make MSVC happy with the build; add a single
987 workspace to support both the library and xmlwf application.
988 - Added a Windows installer for Windows users; includes
990 - Added compile-time constants that can be used to determine the
992 - Removed a lot of GNU-specific dependencies to aide portability
993 among the various Unix flavors.
994 - Fix the UTF-8 BOM bug.
995 - Cleaned up warning messages for several compilers.
996 - Added the -Wall, -Wstrict-prototypes options for GCC.
998 Release 1.95.1 Sun Oct 22 15:11:36 EDT 2000
999 - Changes to get expat to build under Microsoft compiler
1000 - Removed all aborts and instead return an UNEXPECTED_STATE error.
1001 - Fixed a bug where a stray '%' in an entity value would cause an
1003 - Defined XML_SetEndNamespaceDeclHandler. Thanks to Darryl Miles for
1004 finding this oversight.
1005 - Changed default patterns in lib/Makefile.in to fit non-GNU makes
1006 Thanks to robin@unrated.net for reporting and providing an
1008 - The reference had the wrong label for XML_SetStartNamespaceDecl.
1009 Reported by an anonymous user.
1011 Release 1.95.0 Fri Sep 29 2000
1012 - XML_ParserCreate_MM
1013 Allows you to set a memory management suite to replace the
1014 standard malloc,realloc, and free.
1015 - XML_SetReturnNSTriplet
1016 If you turn this feature on when namespace processing is in
1017 effect, then qualified, prefixed element and attribute names
1018 are returned as "uri|name|prefix" where '|' is whatever
1019 separator character is used in namespace processing.
1020 - Merged in features from perl-expat
1021 o XML_SetElementDeclHandler
1022 o XML_SetAttlistDeclHandler
1023 o XML_SetXmlDeclHandler
1024 o XML_SetEntityDeclHandler
1025 o StartDoctypeDeclHandler takes 3 additional parameters:
1026 sysid, pubid, has_internal_subset
1027 o Many paired handler setters (like XML_SetElementHandler)
1028 now have corresponding individual handler setters
1029 o XML_GetInputContext for getting the input context of
1030 the current parse position.
1031 - Added reference material
1032 - Packaged into a distribution that builds a sharable library