Ubuntu 14.10 USN-2554-1 Moderate: GnuPG Denial Of Service Risk

ubuntu

April 1, 2015

Several security issues were fixed in GnuPG.

Summary

Several security issues were fixed in GnuPG.

Software Description:

- gnupg: GNU privacy guard - a free PGP replacement

- gnupg2: GNU privacy guard - a free PGP replacement

Details:

Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered

that GnuPG was susceptible to an attack via physical side channels. A local

attacker could use this attack to possibly recover private keys.

(CVE-2014-3591)

Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was

susceptible to an attack via physical side channels. A local attacker could

use this attack to possibly recover private keys. (CVE-2015-0837)

Hanno Böck discovered that GnuPG incorrectly handled certain malformed

keyrings. If a user or automated system were tricked into opening a

malformed keyring, a remote attacker could use this issue to cause GnuPG to

crash, resulting in a denial of service, or possibly execute arbitrary

code. (CVE-2015-1606, CVE-2015-1607)

In addition, this upd...

Read the Full Advisory

Topics Covered

security advisory denial of service Ubuntu GnuPG key recovery physical attack

Update Instructions

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

Ubuntu 14.10:
  gnupg                           1.4.16-1.2ubuntu1.2
  gnupg2                          2.0.24-1ubuntu2.2

Ubuntu 14.04 LTS:
  gnupg                           1.4.16-1ubuntu2.3
  gnupg2                          2.0.22-3ubuntu1.3

Ubuntu 12.04 LTS:
  gnupg                           1.4.11-3ubuntu2.9
  gnupg2                          2.0.17-2ubuntu2.12.04.6

Ubuntu 10.04 LTS:
  gnupg                           1.4.10-2ubuntu1.8

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