USN-2555-1: Libgcrypt vulnerabilities

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• 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 versions:

Ubuntu 14.10

• libgcrypt11 - 1.5.4-2ubuntu1.1
• libgcrypt20 - 1.6.1-2ubuntu1.14.10.1

Ubuntu 14.04

• libgcrypt11 - 1.5.3-2ubuntu4.2

Ubuntu 12.04

• libgcrypt11 - 1.5.0-3ubuntu0.4

Ubuntu 10.04

• libgcrypt11 - 1.4.4-5ubuntu2.4

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

References

• CVE-2014-3591
• CVE-2015-0837

Related notices

• USN-2554-1: gnupg, gpgv, gnupg-udeb, gpgv2, gpgsm, gnupg-agent, gpgv-udeb, gnupg-curl, gnupg2, scdaemon