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Test ID:1.3.6.1.4.1.25623.1.0.69793
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0871
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2011:0871.

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.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2011-0871.html

Risk factor : High

CVSS Score:
5.8

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1775
BugTraq ID: 47738
http://www.securityfocus.com/bid/47738
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html
http://openwall.com/lists/oss-security/2011/05/06/2
http://openwall.com/lists/oss-security/2011/05/09/7
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01345.html
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01342.html
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01347.html
http://www.redhat.com/support/errata/RHSA-2011-0871.html
http://secunia.com/advisories/44939
CopyrightCopyright (c) 2011 E-Soft Inc. http://www.securityspace.com

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