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Ubuntu Security Notice USN-2789-1
November 03, 2015

xscreensaver vulnerability
==========================================================================

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

– Ubuntu 12.04 LTS

Summary:

The system could be made to expose sensitive information.

Software Description:
– xscreensaver: Automatic screensaver for X

Details:

It was discovered that XScreenSaver incorrectly handled unplugging an
external monitor. An attacker with physical access could use this flaw to
gain access to a locked session.

Update instructions:

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

Ubuntu 12.04 LTS:
xscreensaver 5.15-2ubuntu1.1

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

References:
http://www.ubuntu.com/usn/usn-2789-1
CVE-2015-8025

Package Information:
https://launchpad.net/ubuntu/+source/xscreensaver/5.15-2ubuntu1.1

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