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Red Hat: RHSA-2013:0588-01 Moderate: GnuTLS Timing Attack

Calendar Mar 04, 2013 • User Avatar LinuxSecurity Advisories
6 - 11 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory moderate security update red hat timing attack gnutls enterprise linux
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 [More...] 
====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: gnutls security update
Advisory ID:       RHSA-2013:0588-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2013:0588.html
Issue date:        2013-03-04
CVE Names:         CVE-2013-1619 
====================================================================
1. Summary:

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.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. 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.

4. 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/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

908238 - CVE-2013-1619 gnutls: TLS CBC padding timing attack (lucky-13)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:

i386:
gnutls-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-utils-1.4.1-10.el5_9.1.i386.rpm

x86_64:
gnutls-1.4.1-10.el5_9.1.i386.rpm
gnutls-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-utils-1.4.1-10.el5_9.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:

i386:
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-devel-1.4.1-10.el5_9.1.i386.rpm

x86_64:
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-devel-1.4.1-10.el5_9.1.i386.rpm
gnutls-devel-1.4.1-10.el5_9.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:

i386:
gnutls-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-devel-1.4.1-10.el5_9.1.i386.rpm
gnutls-utils-1.4.1-10.el5_9.1.i386.rpm

ia64:
gnutls-1.4.1-10.el5_9.1.i386.rpm
gnutls-1.4.1-10.el5_9.1.ia64.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.ia64.rpm
gnutls-devel-1.4.1-10.el5_9.1.ia64.rpm
gnutls-utils-1.4.1-10.el5_9.1.ia64.rpm

ppc:
gnutls-1.4.1-10.el5_9.1.ppc.rpm
gnutls-1.4.1-10.el5_9.1.ppc64.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.ppc.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.ppc64.rpm
gnutls-devel-1.4.1-10.el5_9.1.ppc.rpm
gnutls-devel-1.4.1-10.el5_9.1.ppc64.rpm
gnutls-utils-1.4.1-10.el5_9.1.ppc.rpm

s390x:
gnutls-1.4.1-10.el5_9.1.s390.rpm
gnutls-1.4.1-10.el5_9.1.s390x.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.s390.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.s390x.rpm
gnutls-devel-1.4.1-10.el5_9.1.s390.rpm
gnutls-devel-1.4.1-10.el5_9.1.s390x.rpm
gnutls-utils-1.4.1-10.el5_9.1.s390x.rpm

x86_64:
gnutls-1.4.1-10.el5_9.1.i386.rpm
gnutls-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm
gnutls-debuginfo-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-devel-1.4.1-10.el5_9.1.i386.rpm
gnutls-devel-1.4.1-10.el5_9.1.x86_64.rpm
gnutls-utils-1.4.1-10.el5_9.1.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:

i386:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-utils-2.8.5-10.el6_4.1.i686.rpm

x86_64:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-utils-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:

i386:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm

x86_64:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:

x86_64:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-utils-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:

x86_64:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:

i386:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-utils-2.8.5-10.el6_4.1.i686.rpm

ppc64:
gnutls-2.8.5-10.el6_4.1.ppc.rpm
gnutls-2.8.5-10.el6_4.1.ppc64.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.ppc.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.ppc64.rpm
gnutls-devel-2.8.5-10.el6_4.1.ppc.rpm
gnutls-devel-2.8.5-10.el6_4.1.ppc64.rpm
gnutls-utils-2.8.5-10.el6_4.1.ppc64.rpm

s390x:
gnutls-2.8.5-10.el6_4.1.s390.rpm
gnutls-2.8.5-10.el6_4.1.s390x.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.s390.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.s390x.rpm
gnutls-devel-2.8.5-10.el6_4.1.s390.rpm
gnutls-devel-2.8.5-10.el6_4.1.s390x.rpm
gnutls-utils-2.8.5-10.el6_4.1.s390x.rpm

x86_64:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-utils-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:

i386:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm

ppc64:
gnutls-debuginfo-2.8.5-10.el6_4.1.ppc.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.ppc64.rpm
gnutls-guile-2.8.5-10.el6_4.1.ppc.rpm
gnutls-guile-2.8.5-10.el6_4.1.ppc64.rpm

s390x:
gnutls-debuginfo-2.8.5-10.el6_4.1.s390.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.s390x.rpm
gnutls-guile-2.8.5-10.el6_4.1.s390.rpm
gnutls-guile-2.8.5-10.el6_4.1.s390x.rpm

x86_64:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:

i386:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-utils-2.8.5-10.el6_4.1.i686.rpm

x86_64:
gnutls-2.8.5-10.el6_4.1.i686.rpm
gnutls-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-devel-2.8.5-10.el6_4.1.i686.rpm
gnutls-devel-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-utils-2.8.5-10.el6_4.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:

i386:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm

x86_64:
gnutls-debuginfo-2.8.5-10.el6_4.1.i686.rpm
gnutls-debuginfo-2.8.5-10.el6_4.1.x86_64.rpm
gnutls-guile-2.8.5-10.el6_4.1.i686.rpm
gnutls-guile-2.8.5-10.el6_4.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key#package

7. References:

https://access.redhat.com/security/cve/CVE-2013-1619
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact

Copyright 2013 Red Hat, Inc.

Red Hat: RHSA-2013:0588-01 Moderate: GnuTLS Timing Attack

red hat
Calendar Grey March 4, 2013
Dist Redhat Esm H88
Cautious notice from Red Hat concerning GnuTLS vulnerability regarding timing exploitation, alongside security patches for Enterprise Linux versions 5 and 6.
Updated gnutls packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6

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/articles/11258

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate security update red hat timing attack gnutls enterprise linux

References

https://access.redhat.com/security/cve/CVE-2013-1619 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: gnutls-1.4.1-10.el5_9.1.i386.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-utils-1.4.1-10.el5_9.1.i386.rpm
x86_64: gnutls-1.4.1-10.el5_9.1.i386.rpm gnutls-1.4.1-10.el5_9.1.x86_64.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.x86_64.rpm gnutls-utils-1.4.1-10.el5_9.1.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386: gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-devel-1.4.1-10.el5_9.1.i386.rpm
x86_64: gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.x86_64.rpm gnutls-devel-1.4.1-10.el5_9.1.i386.rpm gnutls-devel-1.4.1-10.el5_9.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: gnutls-1.4.1-10.el5_9.1.i386.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-devel-1.4.1-10.el5_9.1.i386.rpm gnutls-utils-1.4.1-10.el5_9.1.i386.rpm
ia64: gnutls-1.4.1-10.el5_9.1.i386.rpm gnutls-1.4.1-10.el5_9.1.ia64.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.i386.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.ia64.rpm gnutls-devel-1.4.1-10.el5_9.1.ia64.rpm gnutls-utils-1.4.1-10.el5_9.1.ia64.rpm
ppc: gnutls-1.4.1-10.el5_9.1.ppc.rpm gnutls-1.4.1-10.el5_9.1.ppc64.rpm gnutls-debuginfo-1.4.1-10.el5_9.1.ppc.rpm

Read the Full Advisory


Advisory ID: RHSA-2013:0588-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:0588.html
Issue date: 2013-03-04

Topic

Updated gnutls packages that fix one security issue are now available forRed Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate security update red hat timing attack gnutls enterprise linux

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

908238 - CVE-2013-1619 gnutls: TLS CBC padding timing attack (lucky-13)

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