An xterm security update has been released for Red Hat Enterprise Linux 8 to address an issue where xterm is crashing when processing combining characters.

RHSA-2021:0611-01: Important: xterm security update

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Red Hat Security Advisory

Synopsis: Important: xterm security update
Advisory ID: RHSA-2021:0611-01
Product: Red Hat Enterprise Linux
Advisory URL:   https://access.redhat.com/errata/RHSA-2021:0611
Issue date: 2021-02-18
CVE Names: CVE-2021-27135
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1. Summary:

An update for xterm is now available for Red Hat Enterprise Linux 8.

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

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.

4. 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

5. Bugs fixed (  https://bugzilla.redhat.com/):

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

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
xterm-331-1.el8_3.2.src.rpm

aarch64:
xterm-331-1.el8_3.2.aarch64.rpm
xterm-debuginfo-331-1.el8_3.2.aarch64.rpm
xterm-debugsource-331-1.el8_3.2.aarch64.rpm
xterm-resize-331-1.el8_3.2.aarch64.rpm
xterm-resize-debuginfo-331-1.el8_3.2.aarch64.rpm

ppc64le:
xterm-331-1.el8_3.2.ppc64le.rpm
xterm-debuginfo-331-1.el8_3.2.ppc64le.rpm
xterm-debugsource-331-1.el8_3.2.ppc64le.rpm
xterm-resize-331-1.el8_3.2.ppc64le.rpm
xterm-resize-debuginfo-331-1.el8_3.2.ppc64le.rpm

s390x:
xterm-331-1.el8_3.2.s390x.rpm
xterm-debuginfo-331-1.el8_3.2.s390x.rpm
xterm-debugsource-331-1.el8_3.2.s390x.rpm
xterm-resize-331-1.el8_3.2.s390x.rpm
xterm-resize-debuginfo-331-1.el8_3.2.s390x.rpm

x86_64:
xterm-331-1.el8_3.2.x86_64.rpm
xterm-debuginfo-331-1.el8_3.2.x86_64.rpm
xterm-debugsource-331-1.el8_3.2.x86_64.rpm
xterm-resize-331-1.el8_3.2.x86_64.rpm
xterm-resize-debuginfo-331-1.el8_3.2.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/

7. References:

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

8. Contact:

The Red Hat security contact is . More contact
details at   https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.