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USN-2339-2: Libgcrypt vulnerability

3 September 2014

Libgcrypt could expose sensitive information when performing decryption.




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
Ubuntu 12.04
Ubuntu 10.04

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


Related notices

  • USN-2339-1: gnupg
  • USN-2554-1: gnupg-curl, scdaemon, gpgv, gpgsm, gpgv2, gnupg-udeb, gnupg, gpgv-udeb, gnupg2, gnupg-agent