GLSA 201906-01: Exim: Remote command execution

http://security.gentoo.org/

Severity:	high
Title:	Exim: Remote command execution
Date:	06/06/2019
Bugs:	#687336
ID:	201906-01

Synopsis

A vulnerability in Exim could allow a remote attacker to execute arbitrary commands.

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	< 4.92	>= 4.92	All supported architectures

Description

A vulnerability was discovered in how Exim validates recipient addresses in the deliver_message() function.

Impact

A remote attacker could execute arbitrary commands by sending an email with a specially crafted recipient address to the affected system.

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-4.92"

References

CVE-2019-10149

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201906-01.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.