Ubuntu Security Notice USN-2339-1
3rd September, 2014
gnupg vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
GnuPG could expose sensitive information when performing decryption.
Software description
- gnupg
– GNU privacy guard – a free PGP replacement
Details
Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG 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 version:
- Ubuntu 12.04 LTS:
-
gnupg
1.4.11-3ubuntu2.7
- Ubuntu 10.04 LTS:
-
gnupg
1.4.10-2ubuntu1.7
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.