A rxvt-unicode security update has been released for Gentoo Linux.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202105-17
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: rxvt-unicode: User-assisted execution of arbitrary code
Date: May 26, 2021
Bugs: #790782
ID: 202105-17

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability in rxvt-unicode may allow a remote attacker to execute
arbitrary code.

Background
==========

rxvt-unicode (urxvt) is a clone of the rxvt terminal emulator.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-terms/rxvt-unicode < 9.22-r9 >= 9.22-r9

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

It was discovered that rxvt-unicode did not properly handle certain
escape sequences.

Impact
======

A remote attacker could entice a user to run a program where attacker
controls the output inside a rxvt terminal window, possibly resulting
in execution of arbitrary code with the privileges of the process or a
Denial of Service condition.

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-9.22-r9"

References
==========

[ 1 ] CVE-2021-33477
  https://nvd.nist.gov/vuln/detail/CVE-2021-33477

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

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

  https://security.gentoo.org/glsa/202105-17

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 2021 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