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==========================================================================
Ubuntu Security Notice USN-1540-2
August 21, 2012

nss vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS

Summary:

NSS could be made to crash if it opened a specially crafted certificate.

Software Description:
- nss: Network Security Service library

Details:

USN-1540-1 fixed vulnerabilities in NSS. This update provides the
corresponding updates for Ubuntu 12.04 LTS.

Original advisory details:

 Kaspar Brand discovered a vulnerability in how the Network Security
 Services (NSS) ASN.1 decoder handles zero length items. If the user were
 tricked into opening a specially crafted certificate, an attacker could
 possibly exploit this to cause a denial of service via application crash.

Update instructions:

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

Ubuntu 12.04 LTS:
  libnss3                         3.13.1.with.ckbi.1.88-1ubuntu6.1

After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1540-2
  http://www.ubuntu.com/usn/usn-1540-1
  CVE-2012-0441

Package Information:
  https://launchpad.net/ubuntu/+source/nss/3.13.1.with.ckbi.1.88-1ubuntu6.1



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