GLSA 201607-12: Exim: Arbitrary code execution

http://security.gentoo.org/

Severity:	normal
Title:	Exim: Arbitrary code execution
Date:	07/20/2016
Bugs:	#517934, #576582
ID:	201607-12

Synopsis

A local attacker could execute arbitrary code by providing unsanitized data to a data source or escalate privileges.

Background

Exim is a message transfer agent (MTA) designed to be a a highly configurable, drop-in replacement for sendmail.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
mail-mta/exim	< 4.87	>= 4.87	All supported architectures

Description

Vulnerabilities have been discovered in Exim’s implementation of set-uid root and when using ‘perl_startup’. These vulnerabilities require a user account on the Exim server and a configuration that does lookups against files to which the user has edit access.

Impact

A local attacker could possibly execute arbitrary code with the privileges of the process, or escalate privileges.

Workaround

There is no known workaround at this time.

Resolution

All Exim users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.87"

References

CVE-2014-2972

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201607-12.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.