[USN-1752-1] GnuTLS vulnerability

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with undefined - http://www.enigmail.net/

iQIcBAEBCgAGBQJRLhAIAAoJEGVp2FWnRL6TfVsP/2RrfhRI4BMxHR/g2ALF8q1B
rb/M9upCSwIieVkJ3KwQyTMMCpvKL3d70xQQ03RrBRxnIGNoywkDk+q+CvVA2n5i
WcrYTrVRNtEVzgRNiNJrcME6soDMJ5MrqJs82hLKX9XcXMUWPP6KE6MZ95B/rglH
NjtkBS9lOXEiX2tYIR7YDH+7ZD17z/GOKecl8NaN/yOut47DOo7wujJuOqYykz9J
ojc6jKPPML77hIhyLnK0HJ+eu6YYw87UVylhgodNNreOidZ28VRB1XnTgVmIv2Ze
1pC4AbK/pDhrplJykunaPgZcZs37wsO63d6UGqGvrIASeqjTYTg0IztEhEAqK1x3
xt25U9lXI30C73njQ8Wm+gRd7cJyA/ZxkItCC0xaFanZUTaD2Wnz4qCTd/XEco0w
Z+7N8Yu3EY9HwQjykMkYEWm/kDQ/ilJYuu1VQ6HO5HtvtHiwfkgA/pPHMRlY9rDl
p4r5Yhb0mgcF5EVEhLzAIbuFJRgUyBN8dBYWLOETsJ8W7qKGwO0HLseGXJlghx1q
uzTdMMWUP6alGHwRwBphckCiblc0l+l+QDOyLEJVq+C/zhDEZYoKjR8ZoF2gkXL7
hFKwZ0A+qIFGA/XgJjrRT0RhyxceujRetg9EyCAOjOi5TU8ihpXKW0qoT1wWuUvz
Vp3pXbKcP0gxDJFD1ckI
=2OaR
-----END PGP SIGNATURE-----
==========================================================================
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

Summary:

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

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

Details:

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