Issued:

2020-11-05

Updated:

2020-11-05

RHSA-2020:4953 - Important: xorg-x11-server security update

Synopsis

Important: xorg-x11-server security update

Type/Severity

Security Advisory Important

Topic

An update for xorg-x11-server is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. 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.

Description

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: Out-of-bounds access in XkbSetNames function (CVE-2020-14345)

• xorg-x11-server: Integer underflow in the X input extension protocol (CVE-2020-14346)

• xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability (CVE-2020-14361)

• xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability (CVE-2020-14362)

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.

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

Affected Products

Updated Packages

• xorg-x11-server-devel-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-1.17.4-18.el6_10.src.rpm
• xorg-x11-server-devel-1.17.4-18.el6_10.ppc.rpm
• xorg-x11-server-Xnest-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-Xorg-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-Xdmx-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-common-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-debuginfo-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-Xnest-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-source-1.17.4-18.el6_10.noarch.rpm
• xorg-x11-server-Xvfb-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-Xorg-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-debuginfo-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-Xdmx-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-Xdmx-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-Xephyr-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-Xvfb-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-devel-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-debuginfo-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-Xnest-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-Xephyr-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-Xorg-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-common-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-debuginfo-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-common-1.17.4-18.el6_10.s390x.rpm
• xorg-x11-server-common-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-devel-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-debuginfo-1.17.4-18.el6_10.ppc.rpm
• xorg-x11-server-Xdmx-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-Xephyr-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-Xvfb-1.17.4-18.el6_10.i686.rpm
• xorg-x11-server-Xvfb-1.17.4-18.el6_10.x86_64.rpm
• xorg-x11-server-Xephyr-1.17.4-18.el6_10.ppc64.rpm
• xorg-x11-server-Xnest-1.17.4-18.el6_10.x86_64.rpm

Fixes

• This content is not included.BZ - 1862241
• This content is not included.BZ - 1862246
• This content is not included.BZ - 1869142
• This content is not included.BZ - 1869144

CVEs

• CVE-2020-14345
• CVE-2020-14346
• CVE-2020-14361
• CVE-2020-14362

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.