GLSA 202011-10: tmux: Buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	tmux: Buffer overflow
Date:	11/11/2020
Bugs:	#753206
ID:	202011-10

Synopsis

A buffer overflow in tmux might allow remote attacker(s) to execute arbitrary code.

Background

tmux is a terminal multiplexer.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-misc/tmux	< 3.1c	>= 3.1c	All supported architectures

Description

A flaw in tmux’s handling of escape characters was discovered which may allow a buffer overflow.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All tmux users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-misc/tmux-3.1c"

References

CVE-2020-27347

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202011-10.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.