GLSA 202105-17: rxvt-unicode: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	rxvt-unicode: User-assisted execution of arbitrary code
Date:	05/26/2021
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	Architecture(s)
x11-terms/rxvt-unicode	< 9.22-r9	>= 9.22-r9	All supported architectures

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

CVE-2021-33477

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202105-17.xml

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.