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Red Hat Enterprise Linux 6 RHSA-2014:0595-01 Critical GnuTLS Overflow Issue

red hat
Calendar Grey June 3, 2014
Dist Redhat Esm H88
Debian patches openssl to resolve a serious integer overflow vulnerability. Significant advisory ID DSA-2021:1234-01 issued currently.
Updated gnutls packages that fix one security issue are now available for Red Hat Enterprise Linux 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/site/articles/11258

Summary

The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS).
A flaw was found in the way GnuTLS parsed session IDs from ServerHello messages of the TLS/SSL handshake. A malicious server could use this flaw to send an excessively long session ID value, which would trigger a buffer overflow in a connecting TLS/SSL client application using GnuTLS, causing the client application to crash or, possibly, execute arbitrary code. (CVE-2014-3466)
Red Hat would like to thank GnuTLS upstream for reporting this issue. Upstream acknowledges Joonas Kuorilehto of Codenomicon as the original reporter.
Users of GnuTLS are advised to upgrade to these updated packages, which correct this issue. For the update to take effect, all applications linked to the GnuTLS library must be restarted.

Topics%20covered

Topics Covered

security advisory security issue update buffer overflow critical Red Hat Enterprise Linux gnutls

References

https://access.redhat.com/security/cve/CVE-2014-3466 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: gnutls-2.8.5-14.el6_5.i686.rpm gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-utils-2.8.5-14.el6_5.i686.rpm
x86_64: gnutls-2.8.5-14.el6_5.i686.rpm gnutls-2.8.5-14.el6_5.x86_64.rpm gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-debuginfo-2.8.5-14.el6_5.x86_64.rpm gnutls-utils-2.8.5-14.el6_5.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-devel-2.8.5-14.el6_5.i686.rpm gnutls-guile-2.8.5-14.el6_5.i686.rpm
x86_64: gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-debuginfo-2.8.5-14.el6_5.x86_64.rpm gnutls-devel-2.8.5-14.el6_5.i686.rpm gnutls-devel-2.8.5-14.el6_5.x86_64.rpm gnutls-guile-2.8.5-14.el6_5.i686.rpm gnutls-guile-2.8.5-14.el6_5.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: gnutls-2.8.5-14.el6_5.i686.rpm gnutls-2.8.5-14.el6_5.x86_64.rpm gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-debuginfo-2.8.5-14.el6_5.x86_64.rpm gnutls-utils-2.8.5-14.el6_5.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: gnutls-debuginfo-2.8.5-14.el6_5.i686.rpm gnutls-debuginfo-2.8.5-14.el6_5.x86_64.rpm gnutls-devel-2.8.5-14.el6_5.i686.rpm gnutls-devel-2.8.5-14.el6_5.x86_64.rpm gnutls-guile-2.8.5-14.el6_5.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:0595-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:0595.html
Issue date: 2014-06-03

Topic

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

Topics%20covered

Topics Covered

security advisory security issue update buffer overflow critical Red Hat Enterprise Linux gnutls

Relevant Releases Architectures

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

1101932 - CVE-2014-3466 gnutls: insufficient session id length check in _gnutls_read_server_hello (GNUTLS-SA-2014-3)

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