USN-2087-1: NSPR vulnerability

Ubuntu Security Notice USN-2087-1

23rd 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 version:

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.