GLSA 202003-47: Exim: Heap-based buffer overflow

Severity:high
Title:Exim: Heap-based buffer overflow
Date:03/20/2020
Bugs: #701282
ID:202003-47

Synopsis

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

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 < 4.92.3 >= 4.92.3 All supported architectures

Description

It was discovered that Exim incorrectly handled certain string operations.

Impact

A remote attacker, able to connect to a vulnerable Exim instance, 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 Exim users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.92.3"
    

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202003-47.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.

License

Copyright 2010 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.

Thank you!