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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0664
                           xterm security update
                             23 February 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           xterm
Publisher:         Red Hat
Operating System:  Red Hat
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-27135  

Reference:         ESB-2021.0615
                   ESB-2021.0549

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2021:0617

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: xterm security update
Advisory ID:       RHSA-2021:0617-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0617
Issue date:        2021-02-22
CVE Names:         CVE-2021-27135 
=====================================================================

1. Summary:

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 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 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

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 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/

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 <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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