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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0871
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.

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

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-1775
BugTraq ID: 47738
CopyrightCopyright (c) 2011 E-Soft Inc.

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