Ubuntu Security Notice USN-2555-1
1st April, 2015
libgcrypt11, libgcrypt20 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 Libgcrypt.
Software description
- libgcrypt11
– LGPL Crypto library - libgcrypt20
– LGPL Crypto library
Details
Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered
that Libgcrypt 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 Libgcrypt was
susceptible to an attack via physical side channels. A local attacker could
use this attack to possibly recover private keys. (CVE-2015-0837)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.10:
-
libgcrypt20
1.6.1-2ubuntu1.14.10.1
-
libgcrypt11
1.5.4-2ubuntu1.1
- Ubuntu 14.04 LTS:
-
libgcrypt11
1.5.3-2ubuntu4.2
- Ubuntu 12.04 LTS:
-
libgcrypt11
1.5.0-3ubuntu0.4
- Ubuntu 10.04 LTS:
-
libgcrypt11
1.4.4-5ubuntu2.4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.