[USN-1752-1] GnuTLS vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2013-03-02T00:00:00


========================================================================== Ubuntu Security Notice USN-1752-1 February 27, 2013

gnutls13, gnutls26 vulnerability

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

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS


GnuTLS could be made to expose sensitive information over the network.

Software Description: - gnutls26: GNU TLS library - gnutls13: GNU TLS library


Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used in GnuTLS was vulnerable to a timing side-channel attack known as the "Lucky Thirteen" issue. A remote attacker could use this issue to perform plaintext-recovery attacks via analysis of timing data.

Update instructions:

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

Ubuntu 12.10: libgnutls26 2.12.14-5ubuntu4.2

Ubuntu 12.04 LTS: libgnutls26 2.12.14-5ubuntu3.2

Ubuntu 11.10: libgnutls26 2.10.5-1ubuntu3.3

Ubuntu 10.04 LTS: libgnutls26 2.8.5-2ubuntu0.3

Ubuntu 8.04 LTS: libgnutls13 2.0.4-1ubuntu2.9

In general, a standard system update will make all the necessary changes.

References: http://www.ubuntu.com/usn/usn-1752-1 CVE-2013-1619

Package Information: https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu4.2 https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.2 https://launchpad.net/ubuntu/+source/gnutls26/2.10.5-1ubuntu3.3 https://launchpad.net/ubuntu/+source/gnutls26/2.8.5-2ubuntu0.3 https://launchpad.net/ubuntu/+source/gnutls13/2.0.4-1ubuntu2.9

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