Scientific Linux SC6: Moderate TigerVNC Update for Remote Access Threat

Date: Wed, 15 Jun 2011 09:37:59 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: tigervnc on SL6.x i386/x86_64
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Synopsis: Moderate: tigervnc security update
Issue Date: 2011-06-15
CVE Numbers: CVE-2011-1775

Virtual Network Computing (VNC) is a remote display system which allows
you to view a computer's desktop environment not only on the machine
where it is running, but from anywhere on the Internet and from a wide
variety of machine architectures. TigerVNC is a suite of VNC servers and
clients.

It was discovered that vncviewer could prompt for and send
authentication credentials to a remote server without first properly
validating the server's X.509 certificate. As vncviewer did not indicate
that the certificate was bad or missing, a man-in-the-middle attacker
could use this flaw to trick a vncviewer client into connecting to a
spoofed VNC server, allowing the attacker to obtain the client's
credentials. (CVE-2011-1775)

All tigervnc users should upgrade to these updated packages, which
contain a backported patch to correct this issue.

SL6:
 i386
tigervnc-1.0.90-0.15.20110314svn4359.el6_1.1.i686.rpm
tigervnc-debuginfo-1.0.90-0.15.20110314svn4359.el6_1.1.i686.rpm
tigervnc-server-1.0.90-0.15.20110314svn4359.el6_1.1.i686.rpm
tigervnc-server-module-1.0.90-0.15.20110314svn4359.el6_1.1.i686.rpm
 x86_64
tigervnc-1.0.90-0.15.20110314svn4359.el6_1.1.x86_64.rpm
tigervnc-debuginfo-1.0.90-0.15.20110314svn4359.el6_1.1.x86_64.rpm
tigervnc-server-1.0.90-0.15.20110314svn4359.el6_1.1.x86_64.rpm
tigervnc-server-module-1.0.90-0.15.20110314svn4359.el6_1.1.x86_64.rpm

- Scientific Linux Development Team