RHEL 6 : vino (RHSA-2013:0169)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An updated vino package that fixes several security issues is now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.

Vino is a Virtual Network Computing (VNC) server for GNOME. It allows
remote users to connect to a running GNOME session using VNC.

It was found that Vino transmitted all clipboard activity on the
system running Vino to all clients connected to port 5900, even those
who had not authenticated. A remote attacker who is able to access
port 5900 on a system running Vino could use this flaw to read
clipboard data without authenticating. (CVE-2012-4429)

Two out-of-bounds memory read flaws were found in the way Vino
processed client framebuffer requests in certain encodings. An
authenticated client could use these flaws to send a specially-crafted
request to Vino, causing it to crash. (CVE-2011-0904, CVE-2011-0905)

In certain circumstances, the vino-preferences dialog box incorrectly
indicated that Vino was only accessible from the local network. This
could confuse a user into believing connections from external networks
are not allowed (even when they are allowed). With this update,
vino-preferences no longer displays connectivity and reachable
information. (CVE-2011-1164)

There was no warning that Universal Plug and Play (UPnP) was used to
open ports on a user's network router when the 'Configure network
automatically to accept connections' option was enabled (it is
disabled by default) in the Vino preferences. This update changes the
option's description to avoid the risk of a UPnP router configuration
change without the user's consent. (CVE-2011-1165)

All Vino users should upgrade to this updated package, which contains
backported patches to resolve these issues. The GNOME session must be
restarted (log out, then log back in) for this update to take effect.

See also :

https://www.redhat.com/security/data/cve/CVE-2011-0904.html
https://www.redhat.com/security/data/cve/CVE-2011-0905.html
https://www.redhat.com/security/data/cve/CVE-2011-1164.html
https://www.redhat.com/security/data/cve/CVE-2011-1165.html
https://www.redhat.com/security/data/cve/CVE-2012-4429.html
http://rhn.redhat.com/errata/RHSA-2013-0169.html

Solution :

Update the affected vino and / or vino-debuginfo packages.

Risk factor :

Medium / CVSS Base Score : 5.1
(CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 4.2
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 63641 ()

Bugtraq ID: 47681
55548

CVE ID: CVE-2011-0904
CVE-2011-0905
CVE-2011-1164
CVE-2011-1165
CVE-2012-4429