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SUSE-SU-2025:20311-1

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SUSE-SU-2025:20311-1

Published: 13 May 2025Last Modified: 23 Mar 2026

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Summary: Security update for expat

Details: This update for expat fixes the following issues: Version update to 2.7.1: Bug fixes: #980 #989 Restore event pointer behavior from Expat 2.6.4 (that the fix to CVE-2024-8176 changed in 2.7.0); affected API functions are: - XML_GetCurrentByteCount - XML_GetCurrentByteIndex - XML_GetCurrentColumnNumber - XML_GetCurrentLineNumber - XML_GetInputContext Other changes: #976 #977 Autotools: Integrate files "fuzz/xml_lpm_fuzzer.{cpp,proto}" with Automake that were missing from 2.7.0 release tarballs #983 #984 Fix printf format specifiers for 32bit Emscripten #992 docs: Promote OpenSSF Best Practices self-certification #978 tests/benchmark: Resolve mistaken double close #986 Address compiler warnings #990 #993 Version info bumped from 11:1:10 (libexpat*.so.1.10.1) to 11:2:10 (libexpat*.so.1.10.2); see https://verbump.de/ for what these numbers do Infrastructure: #982 CI: Start running Perl XML::Parser integration tests #987 CI: Enforce Clang Static Analyzer clean code #991 CI: Re-enable warning clang-analyzer-valist.Uninitialized for clang-tidy #981 CI: Cover compilation with musl #983 #984 CI: Cover compilation with 32bit Emscripten #976 #977 CI: Protect against fuzzer files missing from future release archives version update to 2.7.0 (CVE-2024-8176 [bsc#1239618]): * Security fixes: #893 #973 CVE-2024-8176 -- Fix crash from chaining a large number of entities caused by stack overflow by resolving use of recursion, for all three uses of entities: - general entities in character data ("<e>&g1;</e>") - general entities in attribute values ("<e k1='&g1;'/>") - parameter entities ("%p1;") Known impact is (reliable and easy) denial of service: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:O/RC:C (Base Score: 7.5, Temporal Score: 7.2) Please note that a layer of compression around XML can significantly reduce the minimum attack payload size. * Other changes: #935 #937 Autotools: Make generated CMake files look for libexpat.@[email protected] on macOS #925 Autotools: Sync CMake templates with CMake 3.29 #945 #962 #966 CMake: Drop support for CMake <3.13 #942 CMake: Small fuzzing related improvements #921 docs: Add missing documentation of error code XML_ERROR_NOT_STARTED that was introduced with 2.6.4 #941 docs: Document need for C++11 compiler for use from C++ #959 tests/benchmark: Fix a (harmless) TOCTTOU #944 Windows: Fix installer target location of file xmlwf.xml for CMake #953 Windows: Address warning -Wunknown-warning-option about -Wno-pedantic-ms-format from LLVM MinGW #971 Address Cppcheck warnings #969 #970 Mass-migrate links from http:// to https:// #947 #958 .. #974 #975 Document changes since the previous release #974 #975 Version info bumped from 11:0:10 (libexpat*.so.1.10.0) to 11:1:10 (libexpat*.so.1.10.1); see https://verbump.de/ for what these numbers do - no source changes, just adding jira reference: jsc#SLE-21253 Version update to 2.6.4 * Security fixes: [bsc#1232601][bsc#1232579] #915 CVE-2024-50602 -- Fix crash within function XML_ResumeParser from a NULL pointer dereference by disallowing function XML_StopParser to (stop or) suspend an unstarted parser. A new error code XML_ERROR_NOT_STARTED was introduced to properly communicate this situation. // CWE-476 CWE-754 * Other changes: #903 CMake: Add alias target "expat::expat" #905 docs: Document use via CMake >=3.18 with FetchContent and SOURCE_SUBDIR and its consequences #902 tests: Reduce use of global parser instance #904 tests: Resolve duplicate handler #317 #918 tests: Improve tests on doctype closing (ex CVE-2019-15903) #914 Fix signedness of format strings #919 #920 Version info bumped from 10:3:9 (libexpat*.so.1.9.3) to 11:0:10 (libexpat*.so.1.10.0); see https://verbump.de/ for what these numbers do Update to 2.6.3: * Security fixes: - CVE-2024-45490, bsc#1229930 -- Calling function XML_ParseBuffer with len < 0 without noticing and then calling XML_GetBuffer will have XML_ParseBuffer fail to recognize the problem and XML_GetBuffer corrupt memory. With the fix, XML_ParseBuffer now complains with error XML_ERROR_INVALID_ARGUMENT just like sibling XML_Parse has been doing since Expat 2.2.1, and now documented. Impact is denial of service to potentially artitrary code execution. - CVE-2024-45491, bsc#1229931 -- Internal function dtdCopy can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX). Impact is denial of service to potentially artitrary code execution. - CVE-2024-45492, bsc#1229932 -- Internal function nextScaffoldPart can have an integer overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX). Impact is denial of service to potentially artitrary code execution. Update to 2.6.2: * CVE-2024-28757 -- Prevent billion laughs attacks with isolated use of external parsers (bsc#1221289) * Reject direct parameter entity recursion and avoid the related undefined behavior Update to 2.6.1: * Expose billion laughs API with XML_DTD defined and XML_GE undefined, regression from 2.6.0 * Make tests independent of CPU speed, and thus more robust Update to 2.6.0: * Security fixes: - CVE-2023-52425 (bsc#1219559) -- 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. - CVE-2023-52426 (bsc#1219561) -- 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: - Fix parse-size-dependent "invalid token" error for external entities that start with a byte order mark - Fix NULL pointer dereference in setContext via XML_ExternalEntityParserCreate for compilation with XML_DTD undefined - Protect against closing entities out of order * Other changes: - Improve support for arc4random/arc4random_buf - Improve buffer growth in XML_GetBuffer and XML_Parse - xmlwf: Support --help and --version - xmlwf: Support custom buffer size for XML_GetBuffer and read - xmlwf: Improve language and URL clickability in help output - examples: Add new example "element_declarations.c" - Be stricter about macro XML_CONTEXT_BYTES at build time - Make inclusion to expat_config.h consistent - Autotools: configure.ac: Support --disable-maintainer-mode - Autotools: Sync CMake templates with CMake 3.26 - Autotools: Make installation of shipped man page doc/xmlwf.1 independent of docbook2man availability - 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 - Autotools|CMake: Require a C99 compiler (a de-facto requirement already since Expat 2.2.2 of 2017) - Autotools|CMake: Fix PACKAGE_BUGREPORT variable - Autotools|CMake: Make test suite require a C++11 compiler - CMake: Require CMake >=3.5.0 - CMake: Lowercase off_t and size_t to help a bug in Meson - CMake: Sort xmlwf sources alphabetically - CMake|Windows: Fix generation of DLL file version info - CMake: Build tests/benchmark/benchmark.c as well for a build with -DEXPAT_BUILD_TESTS=ON - docs: Document the importance of isFinal + adjust tests accordingly - docs: Improve use of "NULL" and "null" - docs: Be specific about version of XML (XML 1.0r4) and version of C (C99); (XML 1.0r5 will need a sponsor.) - docs: reference.html: Promote function XML_ParseBuffer more - docs: reference.html: Add HTML anchors to XML_* macros - docs: reference.html: Upgrade to OK.css 1.2.0 - docs: Fix typos - docs|CI: Use HTTPS URLs instead of HTTP at various places - Address compiler warnings - Address clang-tidy warnings - 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

Affected packages

Package

Name: expat

Purl: pkg:rpm/suse/expat&distro=SUSE%20Linux%20Micro%206.1

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 0

Fixed -2.7.1-slfo.1.1_1.1

Affected versions

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High