- Update from version 2.5.0 to 2.6.0
- Update of rootfile
- This update fixes two CVE's. Not sure if IPFire would be vulnerable or not but safer
to update anyway.
- Changelog
2.6.0
Security fixes:
#789#814 CVE-2023-52425 -- Fix quadratic runtime issues with big tokens
that can cause denial of service, in partial where
dealing with compressed XML input. Applications
that parsed a document in one go -- a single call to
functions XML_Parse or XML_ParseBuffer -- were not affected.
The smaller the chunks/buffers you use for parsing
previously, the bigger the problem prior to the fix.
Backporters should be careful to no omit parts of
pull request #789 and to include earlier pull request #771,
in order to not break the fix.
#777 CVE-2023-52426 -- Fix billion laughs attacks for users
compiling *without* XML_DTD defined (which is not common).
Users with XML_DTD defined have been protected since
Expat >=2.4.0 (and that was CVE-2013-0340 back then).
Bug fixes:
#753 Fix parse-size-dependent "invalid token" error for
external entities that start with a byte order mark
#780 Fix NULL pointer dereference in setContext via
XML_ExternalEntityParserCreate for compilation with
XML_DTD undefined
#812#813 Protect against closing entities out of order
Other changes:
#723 Improve support for arc4random/arc4random_buf
#771#788 Improve buffer growth in XML_GetBuffer and XML_Parse
#761#770 xmlwf: Support --help and --version
#759#770 xmlwf: Support custom buffer size for XML_GetBuffer and read
#744 xmlwf: Improve language and URL clickability in help output
#673 examples: Add new example "element_declarations.c"
#764 Be stricter about macro XML_CONTEXT_BYTES at build time
#765 Make inclusion to expat_config.h consistent
#726#727 Autotools: configure.ac: Support --disable-maintainer-mode
#678#705 ..
#706#733#792 Autotools: Sync CMake templates with CMake 3.26
#795 Autotools: Make installation of shipped man page doc/xmlwf.1
independent of docbook2man availability
#815 Autotools|CMake: Add missing -DXML_STATIC to pkg-config file
section "Cflags.private" in order to fix compilation
against static libexpat using pkg-config on Windows
#724#751 Autotools|CMake: Require a C99 compiler
(a de-facto requirement already since Expat 2.2.2 of 2017)
#793 Autotools|CMake: Fix PACKAGE_BUGREPORT variable
#750#786 Autotools|CMake: Make test suite require a C++11 compiler
#749 CMake: Require CMake >=3.5.0
#672 CMake: Lowercase off_t and size_t to help a bug in Meson
#746 CMake: Sort xmlwf sources alphabetically
#785 CMake|Windows: Fix generation of DLL file version info
#790 CMake: Build tests/benchmark/benchmark.c as well for
a build with -DEXPAT_BUILD_TESTS=ON
#745#757 docs: Document the importance of isFinal + adjust tests
accordingly
#736 docs: Improve use of "NULL" and "null"
#713 docs: Be specific about version of XML (XML 1.0r4)
and version of C (C99); (XML 1.0r5 will need a sponsor.)
#762 docs: reference.html: Promote function XML_ParseBuffer more
#779 docs: reference.html: Add HTML anchors to XML_* macros
#760 docs: reference.html: Upgrade to OK.css 1.2.0
#763#739 docs: Fix typos
#696 docs|CI: Use HTTPS URLs instead of HTTP at various places
#669#670 ..
#692#703 ..
#733#772 Address compiler warnings
#798#800 Address clang-tidy warnings
#775#776 Version info bumped from 9:10:8 (libexpat*.so.1.8.10)
to 10:0:9 (libexpat*.so.1.9.0); see https://verbump.de/
for what these numbers do
Infrastructure:
#700#701 docs: Document security policy in file SECURITY.md
#766 docs: Improve parse buffer variables in-code documentation
#674#738 ..
#740#747 ..
#748#781#782 Refactor coverage and conformance tests
#714#716 Refactor debug level variables to unsigned long
#671 Improve handling of empty environment variable value
in function getDebugLevel (without visible user effect)
#755#774 ..
#758#783 ..
#784#787 tests: Improve test coverage with regard to parse chunk size
#660#797#801 Fuzzing: Improve fuzzing coverage
#367#799 Fuzzing|CI: Start running OSS-Fuzz fuzzing regression tests
#698#721 CI: Resolve some Travis CI leftovers
#669 CI: Be robust towards absence of Git tags
#693#694 CI: Set permissions to "contents: read" for security
#709 CI: Pin all GitHub Actions to specific commits for security
#739 CI: Reject spelling errors using codespell
#798 CI: Enforce clang-tidy clean code
#773#808 ..
#809#810 CI: Upgrade Clang from 15 to 18
#796 CI: Start using Clang's Control Flow Integrity sanitizer
#675#720#722 CI: Adapt to breaking changes in GitHub Actions Ubuntu images
#689 CI: Adapt to breaking changes in Clang/LLVM Debian packaging
#763 CI: Adapt to breaking changes in codespell
#803 CI: Adapt to breaking changes in Cppcheck
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
- Update from version 2.4.9 to 2.5.0
- Update of rootfile.
- Changelog
Release 2.5.0 Tue October 25 2022
Security fixes:
#616#649#650 CVE-2022-43680 -- Fix heap use-after-free after overeager
destruction of a shared DTD in function
XML_ExternalEntityParserCreate in out-of-memory situations.
Expected impact is denial of service or potentially
arbitrary code execution.
Bug fixes:
#612#645 Fix curruption from undefined entities
#613#654 Fix case when parsing was suspended while processing nested
entities
#616#652#653 Stop leaking opening tag bindings after a closing tag
mismatch error where a parser is reset through
XML_ParserReset and then reused to parse
#656 CMake: Fix generation of pkg-config file
#658 MinGW|CMake: Fix static library name
Other changes:
#663 Protect header expat_config.h from multiple inclusion
#666 examples: Make use of XML_GetBuffer and be more
consistent across examples
#648 Address compiler warnings
#667#668 Version info bumped from 9:9:8 to 9:10:8;
see https://verbump.de/ for what these numbers do
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
- Update from version 2.4.8 to 2.4.9
- Update of rootfile
- Changelog
Release 2.4.9 Tue September 20 2022
Security fixes:
#629#640 CVE-2022-40674 -- Heap use-after-free vulnerability in
function doContent. Expected impact is denial of service
or potentially arbitrary code execution.
Bug fixes:
#634 MinGW: Fix mis-compilation for -D__USE_MINGW_ANSI_STDIO=0
#614 docs: Fix documentation on effect of switch XML_DTD on
symbol visibility in doc/reference.html
Other changes:
#638 MinGW: Make fix-xmltest-log.sh drop more Wine bug output
#596#625 Autotools: Sync CMake templates with CMake 3.22
#608 CMake: Migrate from use of CMAKE_*_POSTFIX to
dedicated variables EXPAT_*_POSTFIX to stop affecting
other projects
#597#599 Windows|CMake: Add missing -DXML_STATIC to test runners
and fuzzers
#512#621 Windows|CMake: Render .def file from a template to fix
linking with -DEXPAT_DTD=OFF and/or -DEXPAT_ATTR_INFO=ON
#611#621 MinGW|CMake: Apply MSVC .def file when linking
#622#624 MinGW|CMake: Sync library name with GNU Autotools,
i.e. produce libexpat-1.dll rather than libexpat.dll
by default. Filename libexpat.dll.a is unaffected.
#632 MinGW|CMake: Set missing variable CMAKE_RC_COMPILER in
toolchain file "cmake/mingw-toolchain.cmake" to avoid
error "windres: Command not found" on e.g. Ubuntu 20.04
#597#627 CMake: Unify inconsistent use of set() and option() in
context of public build time options to take need for
set(.. FORCE) in projects using Expat by means of
add_subdirectory(..) off Expat's users' shoulders
#626#641 Stop exporting API symbols when building a static library
#644 Resolve use of deprecated "fgrep" by "grep -F"
#620 CMake: Make documentation on variables a bit more consistent
#636 CMake: Drop leading whitespace from a #cmakedefine line in
file expat_config.h.cmake
#594 xmlwf: Fix harmless variable mix-up in function nsattcmp
#592#593#610 Address Cppcheck warnings
#643 Address Clang 15 compiler warnings
#642#644 Version info bumped from 9:8:8 to 9:9:8;
see https://verbump.de/ for what these numbers do
Infrastructure:
#597#598 CI: Windows: Start covering MSVC 2022
#619 CI: macOS: Migrate off deprecated macOS 10.15
#632 CI: Linux: Make migration off deprecated Ubuntu 18.04 work
#643 CI: Upgrade Clang from 14 to 15
#637 apply-clang-format.sh: Add support for BSD find
#633 coverage.sh: Exclude MinGW headers
#635 coverage.sh: Fix name collision for -funsigned-char
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>
- Update from 2.4.6 to 2.4.8
- Update of rootfile
- Changelog
Release 2.4.8 Mon March 28 2022
Other changes:
#587 pkg-config: Move "-lm" to section "Libs.private"
#587 CMake|MSVC: Fix pkg-config section "Libs"
#55#582 CMake|macOS: Start using linker arguments
"-compatibility_version <version>" and
"-current_version <version>" in a way compatible with
GNU Libtool
#590#591 Version info bumped from 9:7:8 to 9:8:8;
see https://verbump.de/ for what these numbers do
Infrastructure:
#589 CI: Upgrade Clang from 13 to 14
Release 2.4.7 Fri March 4 2022
Bug fixes:
#572#577 Relax fix to CVE-2022-25236 (introduced with release 2.4.5)
with regard to all valid URI characters (RFC 3986),
i.e. the following set (excluding whitespace):
ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
0123456789 % -._~ :/?#[]@ !$&'()*+,;=
Other changes:
#555#570#581 CMake|Windows: Store Expat version in the DLL
#577 Document consequences of namespace separator choices not just
in doc/reference.html but also in header <expat.h>
#577 Document Expat's lack of validation of namespace URIs against
RFC 3986, and that the XML 1.0r4 specification doesn't
require Expat to validate namespace URIs, and that Expat
may do more in that regard in future releases.
If you find need for strict RFC 3986 URI validation on
application level today, https://uriparser.github.io/ may
be of interest.
#579 Fix documentation of XML_EndDoctypeDeclHandler in <expat.h>
#575 Document that a call to XML_FreeContentModel can be done at
a later time from outside the element declaration handler
#574 Make hardcoded namespace URIs easier to find in code
#573 Update documentation on use of XML_POOR_ENTOPY on Solaris
#569#571 tests: Resolve use of macros NAN and INFINITY for GNU G++
4.8.2 on Solaris.
#578#580 Version info bumped from 9:6:8 to 9:7:8;
see https://verbump.de/ for what these numbers do
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>
Historically, the MD5 checksums in our LFS files serve as a protection
against broken downloads, or accidentally corrupted source files.
While the sources are nowadays downloaded via HTTPS, it make sense to
beef up integrity protection for them, since transparently intercepting
TLS is believed to be feasible for more powerful actors, and the state
of the public PKI ecosystem is clearly not helping.
Therefore, this patch switches from MD5 to BLAKE2, updating all LFS
files as well as make.sh to deal with this checksum algorithm. BLAKE2 is
notably faster (and more secure) than SHA2, so the performance penalty
introduced by this patch is negligible, if noticeable at all.
In preparation of this patch, the toolchain files currently used have
been supplied with BLAKE2 checksums as well on
https://source.ipfire.org/.
Cc: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Acked-by: Michael Tremer <michael.tremeripfire.org>
- Update from 2.4.4 to 2.4.6
- Update of rootfile
- Changelog
Release 2.4.6 Sun February 20 2022
Bug fixes:
#566 Fix a regression introduced by the fix for CVE-2022-25313
in release 2.4.5 that affects applications that (1)
call function XML_SetElementDeclHandler and (2) are
parsing XML that contains nested element declarations
(e.g. "<!ELEMENT junk ((bar|foo|xyz+), zebra*)>").
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.
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
- Update from 2.4.2 to 2.4.4
- Update of rootfile
- Changelog
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
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
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>
- Update from 2.4.1 to 2.4.2
- Update of rootfile
- Changelog
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
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
- Update from 2.3.0 to 2.4.1
- Update rootfile
- Changelog (URL in changelog changed to https://verbump(dot)de as mail was
rejected by IPFire mail system due to policy violation because URL was
highlighted as a blacklisted addresss
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(dot)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(dot)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
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
- Update from 2.2.0 (2016) to 2.3.0 (2021)
- Update of rootfile
- Changelog is too large to include here
Full details can be viewed in the Changes file in the source tarball
Large number of bug fixes
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Most of these files still used old dates and/or domain names for contact
mail addresses. This is now replaced by an up-to-date copyright line.
Just some housekeeping... :-)
Signed-off-by: Peter Müller <peter.mueller@link38.eu>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
