libxml2 security update

CentOS Errata and Security Advisory CESA-2020:1190

The libxml2 library is a development toolbox providing the implementation of various XML standards.

Security Fix(es):

• libxml2: Use after free triggered by XPointer paths beginning with range-to (CVE-2016-5131)

• libxml2: Use after free in xmlXPathCompOpEvalPositionalPredicate() function in xpath.c (CVE-2017-15412)

• libxml2: DoS caused by incorrect error detection during XZ decompression (CVE-2015-8035)

• libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c (CVE-2018-14404)

• libxml2: Unrestricted memory usage in xz_head() function in xzlib.c (CVE-2017-18258)

• libxml2: Infinite loop caused by incorrect error detection during LZMA decompression (CVE-2018-14567)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2020-April/032588.html

Affected packages:
libxml2
libxml2-devel
libxml2-python
libxml2-static

Upstream details at:
https://access.redhat.com/errata/RHSA-2020:1190