[USN-2339-2] Libgcrypt vulnerability

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-2339-2
September 03, 2014

libgcrypt11 vulnerability
==========================================================================

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

- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Libgcrypt could expose sensitive information when performing decryption.

Software Description:
- libgcrypt11: LGPL Crypto library

Details:

Daniel Genkin, Adi Shamir, and Eran Tromer discovered that Libgcrypt was
susceptible to an adaptive chosen ciphertext attack via physical side
channels. A local attacker could use this attack to possibly recover
private keys.

Update instructions:

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

Ubuntu 14.04 LTS:
  libgcrypt11                     1.5.3-2ubuntu4.1

Ubuntu 12.04 LTS:
  libgcrypt11                     1.5.0-3ubuntu0.3

Ubuntu 10.04 LTS:
  libgcrypt11                     1.4.4-5ubuntu2.3

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

References:
  http://www.ubuntu.com/usn/usn-2339-2
  http://www.ubuntu.com/usn/usn-2339-1
  CVE-2014-5270

Package Information:
  https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.3-2ubuntu4.1
  https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.0-3ubuntu0.3
  https://launchpad.net/ubuntu/+source/libgcrypt11/1.4.4-5ubuntu2.3


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