RHSA-2021:2569: Moderate: libxml2 security update

First published: Tue Jun 29 2021(Updated: )

The libxml2 library is a development toolbox providing the implementation of various XML standards.<br>Security Fix(es):<br><li> libxml2: Use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)</li> <li> libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3517)</li> <li> libxml2: Use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)</li> <li> libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode (CVE-2021-3537)</li> <li> libxml2: Exponential entity expansion attack bypasses all existing protection mechanisms (CVE-2021-3541)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software	Affected Version	How to fix
redhat/libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debugsource	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debugsource	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-devel	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-devel	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-debugsource	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2-devel	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/python3-libxml2-debuginfo	<2.9.7-9.el8_4.2	2.9.7-9.el8_4.2
redhat/libxml2	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa
redhat/libxml2-debuginfo	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa
redhat/libxml2-debugsource	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa
redhat/libxml2-devel	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa
redhat/python3-libxml2	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa
redhat/python3-libxml2-debuginfo	<2.9.7-9.el8_4.2.aa	2.9.7-9.el8_4.2.aa

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Reference Links

https://access.redhat.com/errata/RHSA-2021:2569 (Advisory)

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