-
Notifications
You must be signed in to change notification settings - Fork 430
/
Changes
1107 lines (1028 loc) · 55.4 KB
/
Changes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
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 2.4.5 Fri February 18 2022
Security fixes:
#562 CVE-2022-25235 -- Passing malformed 2- and 3-byte UTF-8
sequences (e.g. from start tag names) to the XML
processing application on top of Expat can cause
arbitrary damage (e.g. code execution) depending
on how invalid UTF-8 is handled inside the XML
processor; validation was not their job but Expat's.
Exploits with code execution are known to exist.
#561 CVE-2022-25236 -- Passing (one or more) namespace separator
characters in "xmlns[:prefix]" attribute values
made Expat send malformed tag names to the XML
processor on top of Expat which can cause
arbitrary damage (e.g. code execution) depending
on such unexpectable cases are handled inside the XML
processor; validation was not their job but Expat's.
Exploits with code execution are known to exist.
#558 CVE-2022-25313 -- Fix stack exhaustion in doctype parsing
that could be triggered by e.g. a 2 megabytes
file with a large number of opening braces.
Expected impact is denial of service or potentially
arbitrary code execution.
#560 CVE-2022-25314 -- Fix integer overflow in function copyString;
only affects the encoding name parameter at parser creation
time which is often hardcoded (rather than user input),
takes a value in the gigabytes to trigger, and a 64-bit
machine. Expected impact is denial of service.
#559 CVE-2022-25315 -- Fix integer overflow in function storeRawNames;
needs input in the gigabytes and a 64-bit machine.
Expected impact is denial of service or potentially
arbitrary code execution.
Other changes:
#557 #564 Version info bumped from 9:4:8 to 9:5:8;
see https://verbump.de/ for what these numbers do
Special thanks to:
Ivan Fratric
Samanta Navarro
and
Google Project Zero
JetBrains
Release 2.4.4 Sun January 30 2022
Security fixes:
#550 CVE-2022-23852 -- Fix signed integer overflow
(undefined behavior) in function XML_GetBuffer
(that is also called by function XML_Parse internally)
for when XML_CONTEXT_BYTES is defined to >0 (which is both
common and default).
Impact is denial of service or more.
#551 CVE-2022-23990 -- Fix unsigned integer overflow in function
doProlog triggered by large content in element type
declarations when there is an element declaration handler
present (from a prior call to XML_SetElementDeclHandler).
Impact is denial of service or more.
Bug fixes:
#544 #545 xmlwf: Fix a memory leak on output file opening error
Other changes:
#546 Autotools: Fix broken CMake support under Cygwin
#554 Windows: Add missing files to the installer to fix
compilation with CMake from installed sources
#552 #554 Version info bumped from 9:3:8 to 9:4:8;
see https://verbump.de/ for what these numbers do
Special thanks to:
Carlo Bramini
hwt0415
Roland Illig
Samanta Navarro
and
Clang LeakSan and the Clang team
Release 2.4.3 Sun January 16 2022
Security fixes:
#531 #534 CVE-2021-45960 -- Fix issues with left shifts by >=29 places
resulting in
a) realloc acting as free
b) realloc allocating too few bytes
c) undefined behavior
depending on architecture and precise value
for XML documents with >=2^27+1 prefixed attributes
on a single XML tag a la
"<r xmlns:a='[..]' a:a123='[..]' [..] />"
where XML_ParserCreateNS is used to create the parser
(which needs argument "-n" when running xmlwf).
Impact is denial of service, or more.
#532 #538 CVE-2021-46143 (ZDI-CAN-16157) -- Fix integer overflow
on variable m_groupSize in function doProlog leading
to realloc acting as free.
Impact is denial of service or more.
#539 CVE-2022-22822 to CVE-2022-22827 -- Prevent integer overflows
near memory allocation at multiple places. Mitre assigned
a dedicated CVE for each involved internal C function:
- CVE-2022-22822 for function addBinding
- CVE-2022-22823 for function build_model
- CVE-2022-22824 for function defineAttribute
- CVE-2022-22825 for function lookup
- CVE-2022-22826 for function nextScaffoldPart
- CVE-2022-22827 for function storeAtts
Impact is denial of service or more.
Other changes:
#535 CMake: Make call to file(GENERATE [..]) work for CMake <3.19
#541 Autotools|CMake: MinGW: Make run.sh(.in) work for Cygwin
and MSYS2 by not going through Wine on these platforms
#527 #528 Address compiler warnings
#533 #543 Version info bumped from 9:2:8 to 9:3:8;
see https://verbump.de/ for what these numbers do
Infrastructure:
#536 CI: Check for realistic minimum CMake version
#529 #539 CI: Cover compilation with -m32
#529 CI: Store coverage reports as artifacts for download
#528 CI: Upgrade Clang from 11 to 13
Special thanks to:
An anonymous whitehat
Christopher Degawa
J. Peter Mugaas
Tyson Smith
and
GCC Farm Project
Trend Micro Zero Day Initiative
Release 2.4.2 Sun December 19 2021
Other changes:
#509 #510 Link againgst libm for function "isnan"
#513 #514 Include expat_config.h as early as possible
#498 Autotools: Include files with release archives:
- buildconf.sh
- fuzz/*.c
#507 #519 Autotools: Sync CMake templates
#495 #524 CMake: MinGW: Fix pkg-config section "Libs" for
- non-release build types (e.g. -DCMAKE_BUILD_TYPE=Debug)
- multi-config CMake generators (e.g. Ninja Multi-Config)
#502 #503 docs: Document that function XML_GetBuffer may return NULL
when asking for a buffer of 0 (zero) bytes size
#522 #523 docs: Fix return value docs for both
XML_SetBillionLaughsAttackProtection* functions
#525 #526 Version info bumped from 9:1:8 to 9:2:8;
see https://verbump.de/ for what these numbers do
Special thanks to:
Dong-hee Na
Joergen Ibsen
Kai Pastor
Release 2.4.1 Sun May 23 2021
Bug fixes:
#488 #490 Autotools: Fix installed header expat_config.h for multilib
systems; regression introduced in 2.4.0 by pull request #486
Other changes:
#491 #492 Version info bumped from 9:0:8 to 9:1:8;
see https://verbump.de/ for what these numbers do
Special thanks to:
Gentoo's QA check "multilib_check_headers"
Release 2.4.0 Sun May 23 2021
Security fixes:
#34 #466 #484 CVE-2013-0340/CWE-776 -- Protect against billion laughs attacks
(denial-of-service; flavors targeting CPU time or RAM or both,
leveraging general entities or parameter entities or both)
by tracking and limiting the input amplification factor
(<amplification> := (<direct> + <indirect>) / <direct>).
By conservative default, amplification up to a factor of 100.0
is tolerated and rejection only starts after 8 MiB of output bytes
(=<direct> + <indirect>) have been processed.
The fix adds the following to the API:
- A new error code XML_ERROR_AMPLIFICATION_LIMIT_BREACH to
signals this specific condition.
- Two new API functions ..
- XML_SetBillionLaughsAttackProtectionMaximumAmplification and
- XML_SetBillionLaughsAttackProtectionActivationThreshold
.. to further tighten billion laughs protection parameters
when desired. Please see file "doc/reference.html" for details.
If you ever need to increase the defaults for non-attack XML
payload, please file a bug report with libexpat.
- Two new XML_FEATURE_* constants ..
- that can be queried using the XML_GetFeatureList function, and
- that are shown in "xmlwf -v" output.
- Two new environment variable switches ..
- EXPAT_ACCOUNTING_DEBUG=(0|1|2|3) and
- EXPAT_ENTITY_DEBUG=(0|1)
.. for runtime debugging of accounting and entity processing.
Specific behavior of these values may change in the future.
- Two new command line arguments "-a FACTOR" and "-b BYTES"
for xmlwf to further tighten billion laughs protection
parameters when desired.
If you ever need to increase the defaults for non-attack XML
payload, please file a bug report with libexpat.
Bug fixes:
#332 #470 For (non-default) compilation with -DEXPAT_MIN_SIZE=ON (CMake)
or CPPFLAGS=-DXML_MIN_SIZE (GNU Autotools): Fix segfault
for UTF-16 payloads containing CDATA sections.
#485 #486 Autotools: Fix generated CMake files for non-64bit and
non-Linux platforms (e.g. macOS and MinGW in particular)
that were introduced with release 2.3.0
Other changes:
#468 #469 xmlwf: Improve help output and the xmlwf man page
#463 xmlwf: Improve maintainability through some refactoring
#477 xmlwf: Fix man page DocBook validity
#458 #459 CMake: Support absolute paths for both CMAKE_INSTALL_LIBDIR
and CMAKE_INSTALL_INCLUDEDIR
#471 #481 CMake: Add support for standard variable BUILD_SHARED_LIBS
#457 Unexpose symbol _INTERNAL_trim_to_complete_utf8_characters
#467 Resolve macro HAVE_EXPAT_CONFIG_H
#472 Delete unused legacy helper file "conftools/PrintPath"
#473 #483 Improve attribution
#464 #465 #477 doc/reference.html: Fix XHTML validity
#475 #478 doc/reference.html: Replace the 90s look by OK.css
#479 Version info bumped from 8:0:7 to 9:0:8
due to addition of new symbols and error codes;
see https://verbump.de/ for what these numbers do
Infrastructure:
#456 CI: Enable periodic runs
#457 CI: Start covering the list of exported symbols
#474 CI: Isolate coverage task
#476 #482 CI: Adapt to breaking changes in image "ubuntu-18.04"
#477 CI: Cover well-formedness and DocBook/XHTML validity
of doc/reference.html and doc/xmlwf.xml
Special thanks to:
Dimitry Andric
Eero Helenius
Nick Wellnhofer
Rhodri James
Tomas Korbar
Yury Gribov
and
Clang LeakSan
JetBrains
OSS-Fuzz
Release 2.3.0 Thu March 25 2021
Bug fixes:
#438 When calling XML_ParseBuffer without a prior successful call to
XML_GetBuffer as a user, no longer trigger undefined behavior
(by adding an integer to a NULL pointer) but rather return
XML_STATUS_ERROR and set the error code to (new) code
XML_ERROR_NO_BUFFER. Found by UBSan (UndefinedBehaviorSanitizer)
of Clang 11 (but not Clang 9).
#444 xmlwf: Exit status 2 was used for both:
- malformed input files (documented) and
- invalid command-line arguments (undocumented).
The case of invalid command-line arguments now
has its own exit status 4, resolving the ambiguity.
Other changes:
#439 xmlwf: Add argument -k to allow continuing after
non-fatal errors
#439 xmlwf: Add section about exit status to the -h help output
#422 #426 #447 Windows: Drop support for Visual Studio <=14.0/2015
#434 Windows: CMake: Detect unsupported Visual Studio at
configure time (rather than at compile time)
#382 #428 testrunner: Make verbose mode (argument "-v") report
about passed tests, and make default mode report about
failures, as well.
#442 CMake: Call "enable_language(CXX)" prior to tinkering
with CMAKE_CXX_* variables
#448 Document use of libexpat from a CMake-based project
#451 Autotools: Install CMake files as generated by CMake 3.19.6
so that users with "find_package(expat [..] CONFIG [..])"
are served on distributions that are *not* using the CMake
build system inside for libexpat packaging
#436 #437 Autotools: Drop obsolescent macro AC_HEADER_STDC
#450 #452 Autotools: Resolve use of obsolete macro AC_CONFIG_HEADER
#441 Address compiler warnings
#443 Version info bumped from 7:12:6 to 8:0:7
due to addition of error code XML_ERROR_NO_BUFFER
(see https://verbump.de/ for what these numbers do)
Infrastructure:
#435 #446 Replace Travis CI by GitHub Actions
Special thanks to:
Alexander Richardson
Oleksandr Popovych
Thomas Beutlich
Tim Bray
and
Clang LeakSan, Clang 11 UBSan and the Clang team
Release 2.2.10 Sat October 3 2020
Bug fixes:
#390 #395 #398 Fix undefined behavior during parsing caused by
pointer arithmetic with NULL pointers
#404 #405 Fix reading uninitialized variable during parsing
#406 xmlwf: Add missing check for malloc NULL return
Other changes:
#396 Windows: Drop support for Visual Studio <=8.0/2005
#409 Windows: Add missing file "Changes" to the installer
to fix compilation with CMake from installed sources
#403 xmlwf: Document exit codes in xmlwf manpage and
exit with code 3 (rather than code 1) for output errors
when used with "-d DIRECTORY"
#356 #359 MinGW: Provide declaration of rand_s for mingwrt <5.3.0
#383 #392 Autotools: Use -Werror while configure tests the compiler
for supported compile flags to avoid false positives
#383 #393 #394 Autotools: Improve handling of user (C|CPP|CXX|LD)FLAGS,
e.g. ensure that they have the last word over flags added
while running ./configure
#360 CMake: Create libexpatw.{dll,so} and expatw.pc (with emphasis
on suffix "w") with -DEXPAT_CHAR_TYPE=(ushort|wchar_t)
#360 CMake: Detect and deny unsupported build combinations
involving -DEXPAT_CHAR_TYPE=(ushort|wchar_t)
#360 CMake: Install pre-compiled shipped xmlwf.1 manpage in case
of -DEXPAT_BUILD_DOCS=OFF
#375 #380 #419 CMake: Fix use of Expat by means of add_subdirectory
#407 #408 CMake: Keep expat target name constant at "expat"
(i.e. refrain from using the target name to control
build artifact filenames)
#385 CMake: Fix compilation with -DEXPAT_SHARED_LIBS=OFF for
Windows
CMake: Expose man page compilation as target "xmlwf-manpage"
#413 #414 CMake: Introduce option EXPAT_BUILD_PKGCONFIG
to control generation of pkg-config file "expat.pc"
#424 CMake: Add minimalistic support for building binary packages
with CMake target "package"; based on CPack
#366 CMake: Add option -DEXPAT_OSSFUZZ_BUILD=(ON|OFF) with
default OFF to build fuzzer code against OSS-Fuzz and
related environment variable LIB_FUZZING_ENGINE
#354 Fix testsuite for -DEXPAT_DTD=OFF and -DEXPAT_NS=OFF, each
#354 #355 ..
#356 #412 Address compiler warnings
#368 #369 Address pngcheck warnings with doc/*.png images
#425 Version info bumped from 7:11:6 to 7:12:6
Special thanks to:
asavah
Ben Wagner
Bhargava Shastry
Frank Landgraf
Jeffrey Walton
Joe Orton
Kleber Tarcísio
Ma Lin
Maciej Sroczyński
Mohammed Khajapasha
Vadim Zeitlin
and
Cppcheck 2.0 and the Cppcheck team
Release 2.2.9 Wed September 25 2019
Other changes:
examples: Drop executable bits from elements.c
#349 Windows: Change the name of the Windows DLLs from expat*.dll
to libexpat*.dll once more (regression from 2.2.8, first
fixed in 1.95.3, issue #61 on SourceForge today,
was issue #432456 back then); needs a fix due
case-insensitive file systems on Windows and the fact that
Perl's XML::Parser::Expat compiles into Expat.dll.
#347 Windows: Only define _CRT_RAND_S if not defined
Version info bumped from 7:10:6 to 7:11:6
Special thanks to:
Ben Wagner
Release 2.2.8 Fri September 13 2019
Security fixes:
#317 #318 CVE-2019-15903 -- Fix heap overflow triggered by
XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber),
and deny internal entities closing the doctype;
fixed in commit c20b758c332d9a13afbbb276d30db1d183a85d43
Bug fixes:
#240 Fix cases where XML_StopParser did not have any effect
when called from inside of an end element handler
#341 xmlwf: Fix exit code for operation without "-d DIRECTORY";
previously, only "-d DIRECTORY" would give you a proper
exit code:
# xmlwf -d . <<<'<not well-formed>' 2>/dev/null ; echo $?
2
# xmlwf <<<'<not well-formed>' 2>/dev/null ; echo $?
0
Now both cases return exit code 2.
Other changes:
#299 #302 Windows: Replace LoadLibrary hack to access
unofficial API function SystemFunction036 (RtlGenRandom)
by using official API function rand_s (needs WinXP+)
#325 Windows: Drop support for Visual Studio <=7.1/2003
and document supported compilers in README.md
#286 Windows: Remove COM code from xmlwf; in case it turns
out needed later, there will be a dedicated repository
below https://github.com/libexpat/ for that code
#322 Windows: Remove explicit MSVC solution and project files.
You can generate Visual Studio solution files through
CMake, e.g.: cmake -G"Visual Studio 15 2017" .
#338 xmlwf: Make "xmlwf -h" help output more friendly
#339 examples: Improve elements.c
#244 #264 Autotools: Add argument --enable-xml-attr-info
#239 #301 Autotools: Add arguments
--with-getrandom
--without-getrandom
--with-sys-getrandom
--without-sys-getrandom
#312 #343 Autotools: Fix linking issues with "./configure LD=clang"
Autotools: Fix "make run-xmltest" for out-of-source builds
#329 #336 CMake: Pull all options from Expat <=2.2.7 into namespace
prefix EXPAT_ with the exception of DOCBOOK_TO_MAN:
- BUILD_doc -> EXPAT_BUILD_DOCS (plural)
- BUILD_examples -> EXPAT_BUILD_EXAMPLES
- BUILD_shared -> EXPAT_SHARED_LIBS
- BUILD_tests -> EXPAT_BUILD_TESTS
- BUILD_tools -> EXPAT_BUILD_TOOLS
- DOCBOOK_TO_MAN -> DOCBOOK_TO_MAN (unchanged)
- INSTALL -> EXPAT_ENABLE_INSTALL
- MSVC_USE_STATIC_CRT -> EXPAT_MSVC_STATIC_CRT
- USE_libbsd -> EXPAT_WITH_LIBBSD
- WARNINGS_AS_ERRORS -> EXPAT_WARNINGS_AS_ERRORS
- XML_CONTEXT_BYTES -> EXPAT_CONTEXT_BYTES
- XML_DEV_URANDOM -> EXPAT_DEV_URANDOM
- XML_DTD -> EXPAT_DTD
- XML_NS -> EXPAT_NS
- XML_UNICODE -> EXPAT_CHAR_TYPE=ushort (!)
- XML_UNICODE_WCHAR_T -> EXPAT_CHAR_TYPE=wchar_t (!)
#244 #264 CMake: Add argument -DEXPAT_ATTR_INFO=(ON|OFF),
default OFF
#326 CMake: Add argument -DEXPAT_LARGE_SIZE=(ON|OFF),
default OFF
#328 CMake: Add argument -DEXPAT_MIN_SIZE=(ON|OFF),
default OFF
#239 #277 CMake: Add arguments
-DEXPAT_WITH_GETRANDOM=(ON|OFF|AUTO), default AUTO
-DEXPAT_WITH_SYS_GETRANDOM=(ON|OFF|AUTO), default AUTO
#326 CMake: Install expat_config.h to include directory
#326 CMake: Generate and install configuration files for
future find_package(expat [..] CONFIG [..])
CMake: Now produces a summary of applied configuration
CMake: Require C++ compiler only when tests are enabled
#330 CMake: Fix compilation for 16bit character types,
i.e. ex -DXML_UNICODE=ON (and ex -DXML_UNICODE_WCHAR_T=ON)
#265 CMake: Fix linking with MinGW
#330 CMake: Add full support for MinGW; to enable, use
-DCMAKE_TOOLCHAIN_FILE=[expat]/cmake/mingw-toolchain.cmake
#330 CMake: Port "make run-xmltest" from GNU Autotools to CMake
#316 CMake: Windows: Make binary postfix match MSVC
Old: expat[d].lib
New: expat[w][d][MD|MT].lib
CMake: Migrate files from Windows to Unix line endings
#308 CMake: Integrate OSS-Fuzz fuzzers, option
-DEXPAT_BUILD_FUZZERS=(ON|OFF), default OFF
#14 Drop an OpenVMS support leftover
#235 #268 ..
#270 #310 ..
#313 #331 #333 Address compiler warnings
#282 #283 ..
#284 #285 Address cppcheck warnings
#294 #295 Address Clang Static Analyzer warnings
#24 #293 Mass-apply clang-format 9 (and ensure conformance during CI)
Version info bumped from 7:9:6 to 7:10:6
Special thanks to:
David Loffredo
Joonun Jang
Kishore Kunche
Marco Maggi
Mitch Phillips
Mohammed Khajapasha
Rolf Ade
xantares
Zhongyuan Zhou
Release 2.2.7 Wed June 19 2019
Security fixes:
#186 #262 CVE-2018-20843 -- Fix extraction of namespace prefixes from
XML names; XML names with multiple colons could end up in
the wrong namespace, and take a high amount of RAM and CPU
resources while processing, opening the door to
use for denial-of-service attacks
Other changes:
#195 #197 Autotools/CMake: Utilize -fvisibility=hidden to stop
exporting non-API symbols
#227 Autotools: Add --without-examples and --without-tests
#228 Autotools: Modernize configure.ac
#245 #246 Autotools: Fix check for -fvisibility=hidden for Clang
#247 #248 Autotools: Fix compilation for lack of docbook2x-man
#236 #258 Autotools: Produce .tar.{gz,lz,xz} release archives
#212 CMake: Make libdir of pkgconfig expat.pc support multilib
#158 #263 CMake: Build man page in PROJECT_BINARY_DIR not _SOURCE_DIR
#219 Remove fallback to bcopy, assume that memmove(3) exists
#257 Use portable "/usr/bin/env bash" shebang (e.g. for OpenBSD)
#243 Windows: Fix syntax of .def module definition files
Version info bumped from 7:8:6 to 7:9:6
Special thanks to:
Benjamin Peterson
Caolán McNamara
Hanno Böck
KangLin
Kishore Kunche
Marco Maggi
Rhodri James
Sebastian Dröge
userwithuid
Yury Gribov
Release 2.2.6 Sun August 12 2018
Bug fixes:
#170 #206 Avoid doing arithmetic with NULL pointers in XML_GetBuffer
#204 #205 Fix 2.2.5 regression with suspend-resume while parsing
a document like '<root/>'
Other changes:
#165 #168 Autotools: Fix docbook-related configure syntax error
#166 Autotools: Avoid grep option `-q` for Solaris
#167 Autotools: Support
./configure DOCBOOK_TO_MAN="xmlto man --skip-validation"
#159 #167 Autotools: Support DOCBOOK_TO_MAN command which produces
xmlwf.1 rather than XMLWF.1; also covers case insensitive
file systems
#181 Autotools: Drop -rpath option passed to libtool
#188 Autotools: Detect and deny SGML docbook2man as ours is XML
#188 Autotools/CMake: Support command db2x_docbook2man as well
#174 CMake: Introduce option WARNINGS_AS_ERRORS, defaults to OFF
#184 #185 CMake: Introduce option MSVC_USE_STATIC_CRT, defaults to OFF
#207 #208 CMake: Introduce option XML_UNICODE and XML_UNICODE_WCHAR_T,
both defaulting to OFF
#175 CMake: Prefer check_symbol_exists over check_function_exists
#176 CMake: Create the same pkg-config file as with GNU Autotools
#178 #179 CMake: Use GNUInstallDirs module to set proper defaults for
install directories
#208 CMake: Utilize expat_config.h.cmake for XML_DEV_URANDOM
#180 Windows: Fix compilation of test suite for Visual Studio 2008
#131 #173 #202 Address compiler warnings
#187 #190 #200 Fix miscellaneous typos
Version info bumped from 7:7:6 to 7:8:6
Special thanks to:
Anton Maklakov
Benjamin Peterson
Brad King
Franek Korta
Frank Rast
Joe Orton
luzpaz
Pedro Vicente
Rainer Jung
Rhodri James
Rolf Ade
Rolf Eike Beer
Thomas Beutlich
Tomasz Kłoczko
Release 2.2.5 Tue October 31 2017
Bug fixes:
#8 If the parser runs out of memory, make sure its internal
state reflects the memory it actually has, not the memory
it wanted to have.
#11 The default handler wasn't being called when it should for
a SYSTEM or PUBLIC doctype if an entity declaration handler
was registered.
#137 #138 Fix a case of mistakenly reported parsing success where
XML_StopParser was called from an element handler
#162 Function XML_ErrorString was returning NULL rather than
a message for code XML_ERROR_INVALID_ARGUMENT
introduced with release 2.2.1
Other changes:
#106 xmlwf: Add argument -N adding notation declarations
#75 #106 Test suite: Resolve expected failure cases where xmlwf
output was incomplete
#127 Windows: Fix test suite compilation
#126 #127 Windows: Fix compilation for Visual Studio 2012
Windows: Upgrade shipped project files to Visual Studio 2017
#33 #132 tests: Mass-fix compilation for XML_UNICODE_WCHAR_T
#129 examples: Fix compilation for XML_UNICODE_WCHAR_T
#130 benchmark: Fix compilation for XML_UNICODE_WCHAR_T
#144 xmlwf: Fix compilation for XML_UNICODE_WCHAR_T; still needs
Windows or MinGW for 2-byte wchar_t
#9 Address two Clang Static Analyzer false positives
#59 Resolve troublesome macros hiding parser struct membership
and dereferencing that pointer
#6 Resolve superfluous internal malloc/realloc switch
#153 #155 Improve docbook2x-man detection
#160 Undefine NDEBUG in the test suite (rather than rejecting it)
#161 Address compiler warnings
Version info bumped from 7:6:6 to 7:7:6
Special thanks to:
Benbuck Nason
Hans Wennborg
José Gutiérrez de la Concha
Pedro Monreal Gonzalez
Rhodri James
Rolf Ade
Stephen Groat
and
Core Infrastructure Initiative
Release 2.2.4 Sat August 19 2017
Bug fixes:
#115 Fix copying of partial characters for UTF-8 input
Other changes:
#109 Fix "make check" for non-x86 architectures that default
to unsigned type char (-128..127 rather than 0..255)
#109 coverage.sh: Cover -funsigned-char
Autotools: Introduce --without-xmlwf argument
#65 Autotools: Replace handwritten Makefile with GNU Automake
#43 CMake: Auto-detect high quality entropy extractors, add new
option USE_libbsd=ON to use arc4random_buf of libbsd
#74 CMake: Add -fno-strict-aliasing only where supported
#114 CMake: Always honor manually set BUILD_* options
#114 CMake: Compile man page if docbook2x-man is available, only
#117 Include file tests/xmltest.log.expected in source tarball
(required for "make run-xmltest")
#117 Include (existing) Visual Studio 2013 files in source tarball
Improve test suite error output
#111 Fix some typos in documentation
Version info bumped from 7:5:6 to 7:6:6
Special thanks to:
Jakub Wilk
Joe Orton
Lin Tian
Rolf Eike Beer
Release 2.2.3 Wed August 2 2017
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 multiple 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: Uninitialized 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.