USN-2865-1: GnuTLS vulnerability
Ubuntu Security Notice USN-2865-1
8th January, 2016
gnutls26, gnutls28 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
GnuTLS could be made to expose sensitive information over the network.
Software description
- gnutls26 - GNU TLS library
- gnutls28 - GNU TLS library
Details
Karthikeyan Bhargavan and Gaetan Leurent discovered that GnuTLS incorrectly
allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were
able to perform a man-in-the-middle attack, this flaw could be exploited to
view sensitive information.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 15.04:
- libgnutls-openssl27 3.3.8-3ubuntu3.2
- libgnutls-deb0-28 3.3.8-3ubuntu3.2
- libgnutlsxx28 3.3.8-3ubuntu3.2
- Ubuntu 14.04 LTS:
- libgnutlsxx27 2.12.23-12ubuntu2.4
- libgnutls-openssl27 2.12.23-12ubuntu2.4
- libgnutls26 2.12.23-12ubuntu2.4
- Ubuntu 12.04 LTS:
- libgnutlsxx27 2.12.14-5ubuntu3.11
- libgnutls-openssl27 2.12.14-5ubuntu3.11
- libgnutls26 2.12.14-5ubuntu3.11
To update your system, please follow these instructions: http://ift.tt/17VXqjU.
In general, a standard system update will make all the necessary changes.
References
from Ubuntu Security Notices http://ift.tt/1IUmI6H