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Ubuntu: Security update for Transmission

Justin C. Klein Keane discovered that the Transmission web client incorrectly escaped certain strings. If a user were tricked into opening a specially crafted torrent file, an attacker could possibly exploit this to conduct cross-site scripting (XSS) attacks.

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1584-1
September 26, 2012

transmission vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS

Summary:

Transmission could be made to expose sensitive information over the
network.

Software Description:
- transmission: lightweight BitTorrent client

Details:

Justin C. Klein Keane discovered that the Transmission web client
incorrectly escaped certain strings. If a user were tricked into opening a
specially crafted torrent file, an attacker could possibly exploit this to
conduct cross-site scripting (XSS) attacks.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
 transmission-common             2.51-0ubuntu1.1

After a standard system update you need to restart Transmission to make
all the necessary changes.

References:
 http://www.ubuntu.com/usn/usn-1584-1
 CVE-2012-4037

Package Information:
 https://launchpad.net/ubuntu/+source/transmission/2.51-0ubuntu1.1
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