==========================================================================
Ubuntu Security Notice USN-2554-1
April 01, 2015
gnupg, gnupg2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.10
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
– Ubuntu 10.04 LTS
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 update improves GnuPG security by validating that the
keys returned by keyservers match those requested.
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.
References:
http://www.ubuntu.com/usn/usn-2554-1
CVE-2014-3591, CVE-2014-5270, CVE-2015-0837, CVE-2015-1606,
CVE-2015-1607
Package Information:
https://launchpad.net/ubuntu/+source/gnupg/1.4.16-1.2ubuntu1.2
https://launchpad.net/ubuntu/+source/gnupg2/2.0.24-1ubuntu2.2
https://launchpad.net/ubuntu/+source/gnupg/1.4.16-1ubuntu2.3
https://launchpad.net/ubuntu/+source/gnupg2/2.0.22-3ubuntu1.3
https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu2.9
https://launchpad.net/ubuntu/+source/gnupg2/2.0.17-2ubuntu2.12.04.6
https://launchpad.net/ubuntu/+source/gnupg/1.4.10-2ubuntu1.8
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1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=DygB
—–END PGP SIGNATURE—–
—
