RedHat: RHSA-2020-4479:01 Moderate: libxml2 security update
Summary
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.
Summary
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.
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/
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/
Topic
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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
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
Bugs Fixed
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