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Red Hat 7: RHSA-2021-0617-01 Important Xterm Crash Threat

red hat
Calendar Grey February 22, 2021
Dist Redhat Esm H88
Patch released for xterm in Red Hat Enterprise Linux 7 addressing critical vulnerability related to system stability. Find out more.
An update for xterm 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

The xterm program is a terminal emulator for the X Window System. It provides DEC VT102 and Tektronix 4014 compatible terminals for programs that can't use the window system directly.
Security Fix(es):
* xterm: crash when processing combining characters (CVE-2021-27135)
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.

References

https://access.redhat.com/security/cve/CVE-2021-27135 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: xterm-295-3.el7_9.1.src.rpm
x86_64: xterm-295-3.el7_9.1.x86_64.rpm xterm-debuginfo-295-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: xterm-295-3.el7_9.1.src.rpm
x86_64: xterm-295-3.el7_9.1.x86_64.rpm xterm-debuginfo-295-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: xterm-295-3.el7_9.1.src.rpm
ppc64: xterm-295-3.el7_9.1.ppc64.rpm xterm-debuginfo-295-3.el7_9.1.ppc64.rpm
ppc64le: xterm-295-3.el7_9.1.ppc64le.rpm xterm-debuginfo-295-3.el7_9.1.ppc64le.rpm
s390x: xterm-295-3.el7_9.1.s390x.rpm xterm-debuginfo-295-3.el7_9.1.s390x.rpm
x86_64: xterm-295-3.el7_9.1.x86_64.rpm xterm-debuginfo-295-3.el7_9.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: xterm-295-3.el7_9.1.src.rpm
x86_64: xterm-295-3.el7_9.1.x86_64.rpm xterm-debuginfo-295-3.el7_9.1.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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0617-01
Product: Red Hat Enterprise Linux
Issue date: 2021-02-22

Topic

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

Relevant Releases Architectures

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

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

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

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

Bugs Fixed

1927559 - CVE-2021-27135 xterm: crash when processing combining characters

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