1. Ubuntu Security Notices
  2. USN-1540-2

USN-1540-2: NSS vulnerability

Publication date

21 August 2012

Overview

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

Releases

Packages

  • 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
12.04 precise libnss3 –  3.13.1.with.ckbi.1.88-1ubuntu6.1

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References

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