Home / mailings [RHSA-2020:4479-01] Moderate: libxml2 security update
Posted on 04 November 2020
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Moderate: libxml2 security update
Advisory ID: RHSA-2020:4479-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4479
Issue date: 2020-11-03
CVE Names: CVE-2019-19956 CVE-2019-20388 CVE-2020-7595
=====================================================================
1. Summary:
An update for libxml2 is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64
3. Description:
The libxml2 library is a development toolbox providing the implementation
of various XML standards.
Security Fix(es):
* libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c
(CVE-2019-19956)
* libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c (CVE-2019-20388)
* libxml2: infinite loop in xmlStringLenDecodeEntities in some end-of-file
situations (CVE-2020-7595)
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 8.3 Release Notes linked from the References section.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
The desktop must be restarted (log out, then log back in) for this update
to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1788856 - CVE-2019-19956 libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c
1799734 - CVE-2019-20388 libxml2: memory leak in xmlSchemaPreRun in xmlschemas.c
1799786 - CVE-2020-7595 libxml2: infinite loop in xmlStringLenDecodeEntities in some end-of-file situations
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
aarch64:
libxml2-debuginfo-2.9.7-8.el8.aarch64.rpm
libxml2-debugsource-2.9.7-8.el8.aarch64.rpm
libxml2-devel-2.9.7-8.el8.aarch64.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.aarch64.rpm
ppc64le:
libxml2-debuginfo-2.9.7-8.el8.ppc64le.rpm
libxml2-debugsource-2.9.7-8.el8.ppc64le.rpm
libxml2-devel-2.9.7-8.el8.ppc64le.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.ppc64le.rpm
s390x:
libxml2-debuginfo-2.9.7-8.el8.s390x.rpm
libxml2-debugsource-2.9.7-8.el8.s390x.rpm
libxml2-devel-2.9.7-8.el8.s390x.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.s390x.rpm
x86_64:
libxml2-debuginfo-2.9.7-8.el8.i686.rpm
libxml2-debuginfo-2.9.7-8.el8.x86_64.rpm
libxml2-debugsource-2.9.7-8.el8.i686.rpm
libxml2-debugsource-2.9.7-8.el8.x86_64.rpm
libxml2-devel-2.9.7-8.el8.i686.rpm
libxml2-devel-2.9.7-8.el8.x86_64.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.i686.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
libxml2-2.9.7-8.el8.src.rpm
aarch64:
libxml2-2.9.7-8.el8.aarch64.rpm
libxml2-debuginfo-2.9.7-8.el8.aarch64.rpm
libxml2-debugsource-2.9.7-8.el8.aarch64.rpm
python3-libxml2-2.9.7-8.el8.aarch64.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.aarch64.rpm
ppc64le:
libxml2-2.9.7-8.el8.ppc64le.rpm
libxml2-debuginfo-2.9.7-8.el8.ppc64le.rpm
libxml2-debugsource-2.9.7-8.el8.ppc64le.rpm
python3-libxml2-2.9.7-8.el8.ppc64le.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.ppc64le.rpm
s390x:
libxml2-2.9.7-8.el8.s390x.rpm
libxml2-debuginfo-2.9.7-8.el8.s390x.rpm
libxml2-debugsource-2.9.7-8.el8.s390x.rpm
python3-libxml2-2.9.7-8.el8.s390x.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.s390x.rpm
x86_64:
libxml2-2.9.7-8.el8.i686.rpm
libxml2-2.9.7-8.el8.x86_64.rpm
libxml2-debuginfo-2.9.7-8.el8.i686.rpm
libxml2-debuginfo-2.9.7-8.el8.x86_64.rpm
libxml2-debugsource-2.9.7-8.el8.i686.rpm
libxml2-debugsource-2.9.7-8.el8.x86_64.rpm
python3-libxml2-2.9.7-8.el8.x86_64.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.i686.rpm
python3-libxml2-debuginfo-2.9.7-8.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2019-19956
https://access.redhat.com/security/cve/CVE-2019-20388
https://access.redhat.com/security/cve/CVE-2020-7595
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
