[SECURITY] [DLA 175-1] gnupg security update

Type debian
Reporter Debian
Modified 2015-03-17T15:35:44


Package : gnupg Version : 1.4.10-4+squeeze7 CVE ID : CVE-2014-3591 CVE-2015-0837 CVE-2015-1606 Debian Bug : 778652

Multiple vulnerabilities were discovered in GnuPG, the GNU Privacy Guard:


The Elgamal decryption routine was susceptible to a side-channel
attack discovered by researchers of Tel Aviv University. Ciphertext
blinding was enabled to counteract it. Note that this may have a quite
noticeable impact on Elgamal decryption performance.


The modular exponentiation routine mpi_powm() was susceptible to a
side-channel attack caused by data-dependent timing variations when
accessing its internal pre-computed table.


The keyring parsing code did not properly reject certain packet types
not belonging in a keyring, which caused an access to memory already
freed. This could allow remote attackers to cause a denial of service
(crash) via crafted keyring files.

For the oldstable distribution (squeeze), those problems have been fixed in version 1.4.10-4+squeeze7.

For the stable distribution (wheezy), these problems have been fixed in version 1.4.12-7+deb7u7.

We recommend that you upgrade your gnupg packages.

-- Raphaël Hertzog ◈ Debian Developer

Support Debian LTS: http://www.freexian.com/services/debian-lts.html Learn to master Debian: http://debian-handbook.info/get/