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

Posted by Bob on: 03/09/2009 03:20 PM [ Print | 0 comment(s) ]

A new security update has been released for Gentoo Linux - Real VNC: User-assisted execution of arbitrary code. Here the announcement:

Gentoo Linux Security Advisory GLSA 200903-17
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http://security.gentoo.org/
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Severity: Normal
Title: Real VNC: User-assisted execution of arbitrary code
Date: March 09, 2009
Bugs: #255225
ID: 200903-17

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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
-------------------------------------------------------------------
1 net-misc/vnc lt; 4.1.3 gt;= 4.1.3

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 "gt;=net-misc/vnc-4.1.3"

References
==========

[ 1 ] CVE-2008-4770
http://cve.mitre.org/cgi-bin/cvename.cgi?name=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
http://bugs.gentoo.org.

License
=======

Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5