Synopsis
Moderate: gnutls security update
Type/Severity
Security Advisory: Moderate
Topic
Updated gnutls packages that fix one security issue are now available for
Red Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
Description
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.
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
Affected Products
-
Red Hat Enterprise Linux Server 6 x86_64
-
Red Hat Enterprise Linux Server 6 i386
-
Red Hat Enterprise Linux Server 5 x86_64
-
Red Hat Enterprise Linux Server 5 ia64
-
Red Hat Enterprise Linux Server 5 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 6.4 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 6.4 i386
-
Red Hat Enterprise Linux Server - Extended Update Support 5.9 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.9 ia64
-
Red Hat Enterprise Linux Server - Extended Update Support 5.9 i386
-
Red Hat Enterprise Linux Server - AUS 5.9 ia64
-
Red Hat Enterprise Linux Server - AUS 5.9 i386
-
Red Hat Enterprise Linux Workstation 6 x86_64
-
Red Hat Enterprise Linux Workstation 6 i386
-
Red Hat Enterprise Linux Workstation 5 x86_64
-
Red Hat Enterprise Linux Workstation 5 i386
-
Red Hat Enterprise Linux Desktop 6 x86_64
-
Red Hat Enterprise Linux Desktop 5 x86_64
-
Red Hat Enterprise Linux Desktop 5 i386
-
Red Hat Enterprise Linux for IBM z Systems 6 s390x
-
Red Hat Enterprise Linux for IBM z Systems 5 s390x
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.4 s390x
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.9 s390x
-
Red Hat Enterprise Linux for Power, big endian 6 ppc64
-
Red Hat Enterprise Linux for Power, big endian 5 ppc
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.4 ppc64
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.9 ppc
-
Red Hat Enterprise Linux for Scientific Computing 6 x86_64
-
Red Hat Enterprise Linux Server from RHUI 6 x86_64
-
Red Hat Enterprise Linux Server from RHUI 6 i386
-
Red Hat Enterprise Linux Server from RHUI 5 x86_64
-
Red Hat Enterprise Linux Server from RHUI 5 i386
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.4 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.4 i386
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.9 x86_64
-
Red Hat Gluster Storage Server for On-premise 2.1 x86_64
-
Red Hat Storage for Public Cloud (via RHUI) 2.1 x86_64
-
Red Hat Enterprise Linux Server - AUS 6.4 x86_64
-
Red Hat Enterprise Linux Server - AUS 5.9 x86_64
-
Red Hat Enterprise Linux Desktop 6 i386
-
Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.9 i386
Fixes
- BZ - 908238 - CVE-2013-1619 gnutls: TLS CBC padding timing attack (lucky-13)
CVEs
References
Vulmon