1. Ubuntu Security Notices
  2. USN-3733-1

USN-3733-1: GnuPG vulnerability

Publication date

7 August 2018

Overview

GnuPG could be made to expose sensitive information.

Releases

Packages

  • gnupg - GNU privacy guard - a free PGP replacement

Details

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink,
Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom
discovered that GnuPG is vulnerable to a cache side-channel attack. A local
attacker could use this attack to recover RSA private keys.

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink,
Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom
discovered that GnuPG is vulnerable to a cache side-channel attack. A local
attacker could use this attack to recover RSA private keys.

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 –  1.4.20-1ubuntu3.3
gnupg-curl –  1.4.20-1ubuntu3.3
gpgv –  1.4.20-1ubuntu3.3
14.04 trusty gnupg –  1.4.16-1ubuntu2.6
gnupg-curl –  1.4.16-1ubuntu2.6
gpgv –  1.4.16-1ubuntu2.6

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›