GLSA 201309-20: Dropbear: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Dropbear: Multiple vulnerabilities
Date:	09/26/2013
Bugs:	#328409, #405607
ID:	201309-20

Synopsis

Multiple vulnerabilities have been found in Dropbear, the worst of which could lead to arbitrary code execution.

Background

Dropbear is an SSH server and client designed with a small memory footprint.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/dropbear	< 2012.55	>= 2012.55	All supported architectures

Description

Multiple vulnerabilities have been discovered in Dropbear. Please review the CVE identifier and Gentoo bug referenced below for details.

Impact

A remote attacker could send a specially crafted request to trigger a use-after-free condition, possibly resulting in arbitrary code execution or a Denial of Service condition. Additionally, the bundled version of libtommath has an error in its prime number generation, which could result in the generation of weak keys.

Workaround

There is no known workaround at this time.

Resolution

All Dropbear users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-misc/dropbear-2012.55"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201309-20.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.