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Red Hat Enterprise Linux 7: RHSA-2021:2033-01 Critical: X.Org Escalation

red hat
Calendar Grey May 19, 2021
Dist Redhat Esm H88
A crucial security patch for xorg-x11-server has been released for Red Hat Enterprise Linux 7, tackling severe vulnerabilities.
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: XChangeFeedbackControl integer underflow leads to privilege escalation (CVE-2021-3472)
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 Red Hat privilege escalation security fix important important update escalation important advisory xorg-x11-server

References

https://access.redhat.com/security/cve/CVE-2021-3472 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: xorg-x11-server-1.20.4-16.el7_9.src.rpm
x86_64: xorg-x11-server-Xephyr-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xorg-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-common-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-debuginfo-1.20.4-16.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm
x86_64: xorg-x11-server-Xdmx-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xnest-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xvfb-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xwayland-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-debuginfo-1.20.4-16.el7_9.i686.rpm xorg-x11-server-debuginfo-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-devel-1.20.4-16.el7_9.i686.rpm xorg-x11-server-devel-1.20.4-16.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: xorg-x11-server-1.20.4-16.el7_9.src.rpm
noarch: xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm
x86_64: xorg-x11-server-Xdmx-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xephyr-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xnest-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xorg-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xvfb-1.20.4-16.el7_9.x86_64.rpm xorg-x11-server-Xwayland-1.20.4-16.el7_9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2033-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2033
Issue date: 2021-05-19

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 Red Hat privilege escalation security fix important important update escalation important advisory 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

1944167 - CVE-2021-3472 xorg-x11-server: XChangeFeedbackControl integer underflow leads to privilege escalation

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