Ubuntu Security Notice USN-2896-1
15th February, 2016
libgcrypt11, libgcrypt20 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Libgcrypt could be made to expose sensitive information.
Software description
- libgcrypt11
– LGPL Crypto library - libgcrypt20
– LGPL Crypto library
Details
Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered
that Libgcrypt was susceptible to an 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 version:
- Ubuntu 15.10:
-
libgcrypt20
1.6.3-2ubuntu1.1
- Ubuntu 14.04 LTS:
-
libgcrypt11
1.5.3-2ubuntu4.3
- Ubuntu 12.04 LTS:
-
libgcrypt11
1.5.0-3ubuntu0.5
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: ubuntu-usn
