Advisory Published

USN-3733-2: GnuPG vulnerability

First published: Wed Aug 15 2018(Updated: )

USN-3733-1 fixed a vulnerability in GnuPG. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory 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.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/gnupg-curl<1.4.11-3ubuntu2.12
1.4.11-3ubuntu2.12
Ubuntu OpenSSH Client=12.04
All of
ubuntu/gpgv<1.4.11-3ubuntu2.12
1.4.11-3ubuntu2.12
Ubuntu OpenSSH Client=12.04
All of
ubuntu/gnupg<1.4.11-3ubuntu2.12
1.4.11-3ubuntu2.12
Ubuntu OpenSSH Client=12.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID USN-3733-2 related to?

    USN-3733-2 addresses a vulnerability in GnuPG affecting the Ubuntu 12.04 ESM version.

  • What are the affected packages for USN-3733-2?

    The affected packages for USN-3733-2 include gnupg, gpgv, and gnupg-curl, all of which must be updated to version 1.4.11-3ubuntu2.12.

  • How do I fix the vulnerability USN-3733-2?

    To fix vulnerability USN-3733-2, update the affected packages gnupg, gpgv, and gnupg-curl to version 1.4.11-3ubuntu2.12.

  • What severity rating has been assigned to USN-3733-2?

    The severity of vulnerability USN-3733-2 is considered important due to its potential impact on system security.

  • Are there any available patches for USN-3733-2?

    Yes, patches are available in the Ubuntu repositories for USN-3733-2 that resolve the identified vulnerability.

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