GLSA 201502-07: libevent: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	libevent: User-assisted execution of arbitrary code
Date:	02/07/2015
Bugs:	#535774
ID:	201502-07

Synopsis

Multiple integer overflow errors in libevent could result in execution of arbitrary code or Denial of Service.

Background

libevent is a library to execute a function when a specific event occurs on a file descriptor.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/libevent	< 2.0.22	>= 2.0.22	All supported architectures

Description

Multiple integer overflow errors in libevent could cause a heap-based buffer overflow.

Impact

A context-dependent attacker could cause an application linked against libevent to pass an excessively long input through evbuffer, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All libevent users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/libevent-2.0.22"

References

CVE-2014-6272

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201502-07.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.