Amazon Linux 2 Security Advisory: ALAS-2023-2021
Advisory Release Date: 2023-04-27 18:36 Pacific
Advisory Updated Date: 2023-05-02 19:18 Pacific
Severity:
Medium
Issue Overview:
A NULL pointer dereference exists when parsing (invalid) XML schemas in libxml2 xmlSchemaCheckCOSSTDerivedOK (CVE-2023-28484)
libxml2 Hashing of empty dict strings isn't deterministic. When hashing empty strings which aren't null-terminated, xmlDictComputeFastKey could produce inconsistent results. This could lead to various logic or memory errors, including double frees. (CVE-2023-29469)
Affected Packages:
libxml2
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libxml2 to update your system.
New Packages:
aarch64:
libxml2-2.9.1-6.amzn2.5.8.aarch64
libxml2-devel-2.9.1-6.amzn2.5.8.aarch64
libxml2-static-2.9.1-6.amzn2.5.8.aarch64
libxml2-python-2.9.1-6.amzn2.5.8.aarch64
libxml2-debuginfo-2.9.1-6.amzn2.5.8.aarch64
i686:
libxml2-2.9.1-6.amzn2.5.8.i686
libxml2-devel-2.9.1-6.amzn2.5.8.i686
libxml2-static-2.9.1-6.amzn2.5.8.i686
libxml2-python-2.9.1-6.amzn2.5.8.i686
libxml2-debuginfo-2.9.1-6.amzn2.5.8.i686
src:
libxml2-2.9.1-6.amzn2.5.8.src
x86_64:
libxml2-2.9.1-6.amzn2.5.8.x86_64
libxml2-devel-2.9.1-6.amzn2.5.8.x86_64
libxml2-static-2.9.1-6.amzn2.5.8.x86_64
libxml2-python-2.9.1-6.amzn2.5.8.x86_64
libxml2-debuginfo-2.9.1-6.amzn2.5.8.x86_64