1. Ubuntu Security Notices
  2. USN-3064-1

USN-3064-1: GnuPG vulnerability

Publication date

18 August 2016

Overview

GnuPG incorrectly generated random numbers.

Releases

Packages

  • gnupg - GNU privacy guard - a free PGP replacement

Details

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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial gnupg –  1.4.20-1ubuntu3.1
14.04 trusty gnupg –  1.4.16-1ubuntu2.4
12.04 precise gnupg –  1.4.11-3ubuntu2.10

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References

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