Debian Security Advisory
DLA-190-1 libgcrypt11 -- LTS security update
- Date Reported:
- 09 Apr 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.