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Debian Security Advisory DSA 3185-1 (libgcrypt11 - security update)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

4.3

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

8 months ago

Summary

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.

Affected Software

Affected Software

libgcrypt11 on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

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.

Common Vulnerabilities and Exposures (CVE)