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USN-1540-2: NSS vulnerability

21 August 2012

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



  • nss - Network Security Service library


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

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


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