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Red Hat Enterprise Linux 7: RHSA-2020-4910-01 Important: Xorg Update

red hat
Calendar Grey November 4, 2020
Dist Redhat Esm H88
Red Hat has announced a critical security patch for the xorg-x11-server, addressing multiple vulnerabilities that could lead to privilege elevation.
An update for xorg-x11-server 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

Summary

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.

Topics%20covered

Topics Covered

security advisory security issue update red hat privilege escalation important xorg-x11-server

References

https://access.redhat.com/security/cve/CVE-2020-14345 https://access.redhat.com/security/cve/CVE-2020-14346 https://access.redhat.com/security/cve/CVE-2020-14361 https://access.redhat.com/security/cve/CVE-2020-14362 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: xorg-x11-server-1.20.4-12.el7_9.src.rpm
x86_64: xorg-x11-server-Xephyr-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xorg-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-common-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-debuginfo-1.20.4-12.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: xorg-x11-server-source-1.20.4-12.el7_9.noarch.rpm
x86_64: xorg-x11-server-Xdmx-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xnest-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xvfb-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xwayland-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-debuginfo-1.20.4-12.el7_9.i686.rpm xorg-x11-server-debuginfo-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-devel-1.20.4-12.el7_9.i686.rpm xorg-x11-server-devel-1.20.4-12.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: xorg-x11-server-1.20.4-12.el7_9.src.rpm
noarch: xorg-x11-server-source-1.20.4-12.el7_9.noarch.rpm
x86_64: xorg-x11-server-Xdmx-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xephyr-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xnest-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xorg-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xvfb-1.20.4-12.el7_9.x86_64.rpm xorg-x11-server-Xwayland-1.20.4-12.el7_9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4910-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4910
Issue date: 2020-11-04

Topic

An update for xorg-x11-server is now available for Red Hat Enterprise Linux7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue update red hat privilege escalation important xorg-x11-server

Relevant Releases Architectures

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

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

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

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

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

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

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

Bugs Fixed

1862241 - CVE-2020-14345 xorg-x11-server: Out-of-bounds access in XkbSetNames function

1862246 - CVE-2020-14346 xorg-x11-server: Integer underflow in the X input extension protocol

1869142 - CVE-2020-14361 xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability

1869144 - CVE-2020-14362 xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability

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