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Ubuntu Security Notice USN-2059-1

Ubuntu Security Notice USN-2059-1
Posted Dec 19, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2059-1 - Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was susceptible to an adaptive chosen ciphertext attack via acoustic emanations. A local attacker could use this attack to possibly recover private keys.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2013-4576
MD5 | ea0b5437857994c87e948f01a7e5c636

Ubuntu Security Notice USN-2059-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2059-1
December 18, 2013

gnupg vulnerability
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

GnuPG could expose sensitive information when performing decryption.

Software Description:
- gnupg: GNU privacy guard - a free PGP replacement

Details:

Daniel Genkin, Adi Shamir, and Eran Tromer discovered that GnuPG was
susceptible to an adaptive chosen ciphertext attack via acoustic
emanations. A local attacker could use this attack to possibly recover
private keys.

Update instructions:

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

Ubuntu 13.10:
gnupg 1.4.14-1ubuntu2.1

Ubuntu 13.04:
gnupg 1.4.12-7ubuntu1.3

Ubuntu 12.10:
gnupg 1.4.11-3ubuntu4.4

Ubuntu 12.04 LTS:
gnupg 1.4.11-3ubuntu2.5

Ubuntu 10.04 LTS:
gnupg 1.4.10-2ubuntu1.5

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

References:
http://www.ubuntu.com/usn/usn-2059-1
CVE-2013-4576

Package Information:
https://launchpad.net/ubuntu/+source/gnupg/1.4.14-1ubuntu2.1
https://launchpad.net/ubuntu/+source/gnupg/1.4.12-7ubuntu1.3
https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu4.4
https://launchpad.net/ubuntu/+source/gnupg/1.4.11-3ubuntu2.5
https://launchpad.net/ubuntu/+source/gnupg/1.4.10-2ubuntu1.5
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