Debian Security Advisory
DSA-3185-1 libgcrypt11 -- security update
- Date Reported:
- 12 Mar 2015
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2014-3591, CVE-2015-0837.
- More information:
Multiple vulnerabilities were discovered in libgcrypt:
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.
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.