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=========================================================================Ubuntu Security Notice USN-2821-1
November 30, 2015

gnutls26 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

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

Software Description:
- gnutls26: GNU TLS library

Details:

It was discovered that GnuTLS incorrectly validated the first byte of
padding in CBC modes. A remote attacker could possibly use this issue to
perform a padding oracle attack.

Update instructions:

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

Ubuntu 14.04 LTS:
  libgnutls26                     2.12.23-12ubuntu2.3

Ubuntu 12.04 LTS:
  libgnutls26                     2.12.14-5ubuntu3.10

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

References:
  https://ubuntu.com/security/notices/USN-2821-1
  https://launchpad.net/bugs/1510163

Package Information:
  https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.3
  https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.10


Ubuntu 2821-1: GnuTLS vulnerability

November 30, 2015
GnuTLS could be made to expose sensitive information over the network.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: libgnutls26 2.12.23-12ubuntu2.3 Ubuntu 12.04 LTS: libgnutls26 2.12.14-5ubuntu3.10 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2821-1

https://launchpad.net/bugs/1510163

Severity
November 30, 2015

Package Information

https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.3 https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.10

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