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Gentoo Linux Security Advisory                           GLSA 202310-20
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                                           https://security.gentoo.org/
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 Severity: High
    Title: rxvt-unicode: Arbitrary Code Execution
     Date: October 30, 2023
     Bugs: #884787
       ID: 202310-20

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Synopsis
========

A vulnerability has been discovered in rxvt-unicode where data written
to the terminal can lead to code execution.

Background
==========

rxvt-unicode is a clone of the well known terminal emulator rxvt.

Affected packages
=================

Package                 Vulnerable    Unaffected
----------------------  ------------  ------------
x11-terms/rxvt-unicode  < 9.30        >= 9.30

Description
===========

A vulnerability has been discovered in rxvt-unicode. Please review the
CVE identifiers referenced below for details.

Impact
======

in the Perl background extension, when an attacker can
control the data written to the user's terminal and certain options are
set.

The "background" extension is automatically loaded if certain X
resources are set such as 'transparent' (see the full list at the top of
src/perl/background[1]). So it is possible to be using this extension
without realising it.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All rxvt-unicode users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=x11-terms/rxvt-unicode-9.30"

References
==========

[ 1 ] CVE-2022-4170
      https://nvd.nist.gov/vuln/detail/CVE-2022-4170

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202310-20

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5/

Gentoo: GLSA-202310-20: rxvt-unicode: Arbitrary Code Execution

A vulnerability has been discovered in rxvt-unicode where data written to the terminal can lead to code execution.

Summary

A vulnerability has been discovered in rxvt-unicode. Please review the CVE identifiers referenced below for details.

Resolution

All rxvt-unicode users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-terms/rxvt-unicode-9.30"

References

[ 1 ] CVE-2022-4170 https://nvd.nist.gov/vuln/detail/CVE-2022-4170

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202310-20

Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
Severity: High
Title: rxvt-unicode: Arbitrary Code Execution
Date: October 30, 2023
Bugs: #884787
ID: 202310-20

Synopsis

A vulnerability has been discovered in rxvt-unicode where data written to the terminal can lead to code execution.

Background

rxvt-unicode is a clone of the well known terminal emulator rxvt.

Affected Packages

Package Vulnerable Unaffected ---------------------- ------------ ------------ x11-terms/rxvt-unicode < 9.30 >= 9.30

Impact

in the Perl background extension, when an attacker can control the data written to the user's terminal and certain options are set.
The "background" extension is automatically loaded if certain X resources are set such as 'transparent' (see the full list at the top of src/perl/background[1]). So it is possible to be using this extension without realising it.

Workaround

There is no known workaround at this time.

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