GLSA 200903-17: Real VNC: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	Real VNC: User-assisted execution of arbitrary code
Date:	03/09/2009
Bugs:	#255225
ID:	200903-17

Synopsis

The Real VNC client is vulnerable to execution of arbitrary code when connecting to a malicious server.

Background

Real VNC is a remote desktop viewer display system.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/vnc	< 4.1.3	>= 4.1.3	All supported architectures

Description

An unspecified vulnerability has been discovered int the CMsgReader::readRect() function in the VNC Viewer component, related to the encoding type of RFB protocol data.

Impact

A remote attacker could entice a user to connect to a malicious VNC server, or leverage Man-in-the-Middle attacks, to cause the execution of arbitrary code with the privileges of the user running the VNC viewer.

Workaround

There is no known workaround at this time.

Resolution

All Real VNC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/vnc-4.1.3"

References

CVE-2008-4770

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200903-17.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.