GLSA 202011-02: OpenDMARC: Heap-based buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	OpenDMARC: Heap-based buffer overflow
Date:	11/03/2020
Bugs:	#734158
ID:	202011-02

Synopsis

A heap-based buffer overflow in OpenDMARC might allow remote attackers to execute arbitrary code.

Background

OpenDMARC is an open source DMARC implementation.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
mail-filter/opendmarc	< 1.3.3	>= 1.3.3	All supported architectures

Description

It was found that OpenDMARC did not properly handle DMARC aggregate reports.

Impact

A remote attacker, by sending a specially crafted DMARC aggregate report, could possibly cause a Denial of Service condition and depending on how OpenDMARC library is used in linked application execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.

Resolution

All OpenDMARC users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=mail-filter/opendmarc-1.3.3"

References

CVE-2020-12460

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202011-02.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.