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Red Hat Enterprise Linux 7: RHSA-2020-1190-01 Moderate: Libxml2 DoS Issues

red hat
Calendar Grey March 31, 2020
Scroller Redhat
Oracle has published a notable safety alert regarding OpenSSL for Solaris 11, tackling significant vulnerabilities in SSL/TLS protocols.
An update for libxml2 is now available for Red Hat Enterprise Linux 7

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate denial of service security impact red hat enterprise linux xml processing libxml2

References

https://access.redhat.com/security/cve/CVE-2015-8035 https://access.redhat.com/security/cve/CVE-2016-5131 https://access.redhat.com/security/cve/CVE-2017-15412 https://access.redhat.com/security/cve/CVE-2017-18258 https://access.redhat.com/security/cve/CVE-2018-14404 https://access.redhat.com/security/cve/CVE-2018-14567 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/7.8_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libxml2-2.9.1-6.el7.4.src.rpm
x86_64: libxml2-2.9.1-6.el7.4.i686.rpm libxml2-2.9.1-6.el7.4.x86_64.rpm libxml2-debuginfo-2.9.1-6.el7.4.i686.rpm libxml2-debuginfo-2.9.1-6.el7.4.x86_64.rpm libxml2-python-2.9.1-6.el7.4.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: libxml2-debuginfo-2.9.1-6.el7.4.i686.rpm libxml2-debuginfo-2.9.1-6.el7.4.x86_64.rpm libxml2-devel-2.9.1-6.el7.4.i686.rpm libxml2-devel-2.9.1-6.el7.4.x86_64.rpm libxml2-static-2.9.1-6.el7.4.i686.rpm libxml2-static-2.9.1-6.el7.4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: libxml2-2.9.1-6.el7.4.src.rpm
x86_64: libxml2-2.9.1-6.el7.4.i686.rpm libxml2-2.9.1-6.el7.4.x86_64.rpm libxml2-debuginfo-2.9.1-6.el7.4.i686.rpm libxml2-debuginfo-2.9.1-6.el7.4.x86_64.rpm libxml2-python-2.9.1-6.el7.4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: libxml2-debuginfo-2.9.1-6.el7.4.i686.rpm libxml2-debuginfo-2.9.1-6.el7.4.x86_64.rpm libxml2-devel-2.9.1-6.el7.4.i686.rpm libxml2-devel-2.9.1-6.el7.4.x86_64.rpm libxml2-static-2.9.1-6.el7.4.i686.rpm libxml2-static-2.9.1-6.el7.4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libxml2-2.9.1-6.el7.4.src.rpm
ppc64: libxml2-2.9.1-6.el7.4.ppc.rpm libxml2-2.9.1-6.el7.4.ppc64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:1190-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1190
Issue date: 2020-03-31

Topic

An update for libxml2 is now available for Red Hat Enterprise Linux 7.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.

Topics%20covered

Topics Covered

security advisory moderate denial of service security impact red hat enterprise linux xml processing libxml2

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1277146 - CVE-2015-8035 libxml2: DoS caused by incorrect error detection during XZ decompression

1358641 - CVE-2016-5131 libxml2: Use after free triggered by XPointer paths beginning with range-to

1523128 - CVE-2017-15412 libxml2: Use after free in xmlXPathCompOpEvalPositionalPredicate() function in xpath.c

1566749 - CVE-2017-18258 libxml2: Unrestricted memory usage in xz_head() function in xzlib.c

1595985 - CVE-2018-14404 libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c

1619875 - CVE-2018-14567 libxml2: Infinite loop caused by incorrect error detection during LZMA decompression

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