Ubuntu: 2087-1: NSPR vulnerability
Posted by Benjamin D. Thomas   
Ubuntu NSPR could be made to crash or run programs if it received a speciallycrafted certificate.
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Ubuntu Security Notice USN-2087-1
January 23, 2014

nspr vulnerability
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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

Summary:

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

Software Description:
- nspr: NetScape Portable Runtime Library

Details:

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

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

References:
  http://www.ubuntu.com/usn/usn-2087-1
  CVE-2013-5607

Package Information:
  https://launchpad.net/ubuntu/+source/nspr/2:4.9.5-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/nspr/4.9.5-0ubuntu0.12.10.2
  https://launchpad.net/ubuntu/+source/nspr/4.9.5-0ubuntu0.12.04.2
  https://launchpad.net/ubuntu/+source/nspr/4.9.5-0ubuntu0.10.04.2