gnutls security update

CentOS Errata and Security Advisory CESA-2013:0588

The GnuTLS library provides support for cryptographic algorithms and for
protocols such as Transport Layer Security (TLS).

It was discovered that GnuTLS leaked timing information when decrypting
TLS/SSL protocol encrypted records when CBC-mode cipher suites were used.
A remote attacker could possibly use this flaw to retrieve plain text from
the encrypted packets by using a TLS/SSL server as a padding oracle.
(CVE-2013-1619)

Users of GnuTLS are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. For the update to take
effect, all applications linked to the GnuTLS library must be restarted,
or the system rebooted.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2013-March/081424.html
https://lists.centos.org/pipermail/centos-announce/2013-March/081782.html
https://lists.centos.org/pipermail/centos-cr-announce/2013-March/027087.html

Affected packages:
gnutls
gnutls-devel
gnutls-guile
gnutls-utils

Upstream details at:
https://access.redhat.com/errata/RHSA-2013:0588