USN-2087-1: NSPR vulnerability

23 January 2014

nspr vulnerability

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

  • Ubuntu 13.10
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


NSPR could be made to crash or run programs if it received a specially crafted certificate.

Software Description

  • nspr - NetScape Portable Runtime Library


It was discovered that NSPR incorrectly handled certain malformed X.509 certificates. A remote attacker could use a crafted X.509 certificate to cause NSPR to crash, leading to a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 13.10
libnspr4 - 2:4.9.5-1ubuntu1.1
Ubuntu 12.10
libnspr4 - 4.9.5-0ubuntu0.12.10.2
Ubuntu 12.04 LTS
libnspr4 - 4.9.5-0ubuntu0.12.04.2
Ubuntu 10.04 LTS
libnspr4-0d - 4.9.5-0ubuntu0.10.04.2

To update your system, please follow these instructions:

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