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