Security Information / 2015 / Security Information -- DSA-3185-1 libgcrypt11

Debian Security Advisory

DSA-3185-1 libgcrypt11 -- security update

Date Reported:

12 Mar 2015

Affected Packages:

libgcrypt11

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2014-3591, CVE-2015-0837.

More information:

Multiple vulnerabilities were discovered in libgcrypt:

• CVE-2014-3591

  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.

• CVE-2015-0837

  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.

For the stable distribution (wheezy), these problems have been fixed in version 1.5.0-5+deb7u3.

We recommend that you upgrade your libgcrypt11 packages.