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USN-3064-1: GnuPG vulnerability

18 August 2016

GnuPG incorrectly generated random numbers.



  • gnupg - GNU privacy guard - a free PGP replacement


Felix Dörre and Vladimir Klebanov discovered that GnuPG incorrectly handled
mixing functions in the random number generator. An attacker able to obtain
4640 bits from the RNG can trivially predict the next 160 bits of output.

Update instructions

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

Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

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


Related notices

  • USN-3065-1: libgcrypt11-doc, libgcrypt11-dev, libgcrypt20-doc, libgcrypt20, libgcrypt11, libgcrypt20-dev, libgcrypt11-udeb, libgcrypt20-udeb