GLSA 201612-36: TigerVNC: Integer overflow

http://security.gentoo.org/

Severity:	normal
Title:	TigerVNC: Integer overflow
Date:	12/13/2016
Bugs:	#534714
ID:	201612-36

Synopsis

An integer overflow in TigerVNC might allow remote attackers to execute arbitrary code.

Background

TigerVNC is a high-performance VNC server/client.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/tigervnc	< 1.4.2	>= 1.4.2	All supported architectures

Description

TigerVNC is impacted by the same vulnerability as found in CVE-2014-6051. An integer overflow, leading to a heap-based buffer overflow, was found in the way screen sizes were handled.

Impact

A remote attacker, utilizing a malicious VNC server, could execute arbitrary code with the privileges of the user running the client, or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All TigerVNC users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-misc/tigervnc-1.4.2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201612-36.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.