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Red Hat: 2010:0888-01 Important: OpenSSL Race Condition Threat

red hat
Calendar Grey November 16, 2010
Dist Redhat Esm H88
Oracle alerts highlight an important OpenSSH update addressing a vulnerability that impacts various platforms.
Updated openssl 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

Summary

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.
A race condition flaw has been found in the OpenSSL TLS server extension parsing code, which could affect some multithreaded OpenSSL applications. Under certain specific conditions, it may be possible for a remote attacker to trigger this race condition and cause such an application to crash, or possibly execute arbitrary code with the permissions of the application. (CVE-2010-3864)
Note that this issue does not affect the Apache HTTP Server. Refer to Red Hat Bugzilla bug 649304 for more technical details on how to determine if your application is affected.
Red Hat would like to thank Rob Hulswit for reporting this issue.
All OpenSSL users should upgrade to these updated packages, which contain a backported patch to resolve this issue. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux race condition important update Linux package update OpenSSL issue server security patch

References

https://access.redhat.com/security/cve/CVE-2010-3864 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: openssl-1.0.0-4.el6_0.1.i686.rpm openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm
x86_64: openssl-1.0.0-4.el6_0.1.i686.rpm openssl-1.0.0-4.el6_0.1.x86_64.rpm openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm openssl-debuginfo-1.0.0-4.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm openssl-devel-1.0.0-4.el6_0.1.i686.rpm openssl-perl-1.0.0-4.el6_0.1.i686.rpm openssl-static-1.0.0-4.el6_0.1.i686.rpm
x86_64: openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm openssl-debuginfo-1.0.0-4.el6_0.1.x86_64.rpm openssl-devel-1.0.0-4.el6_0.1.i686.rpm openssl-devel-1.0.0-4.el6_0.1.x86_64.rpm openssl-perl-1.0.0-4.el6_0.1.x86_64.rpm openssl-static-1.0.0-4.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: openssl-1.0.0-4.el6_0.1.i686.rpm openssl-1.0.0-4.el6_0.1.x86_64.rpm openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm openssl-debuginfo-1.0.0-4.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: openssl-debuginfo-1.0.0-4.el6_0.1.i686.rpm openssl-debuginfo-1.0.0-4.el6_0.1.x86_64.rpm openssl-devel-1.0.0-4.el6_0.1.i686.rpm openssl-devel-1.0.0-4.el6_0.1.x86_64.rpm openssl-perl-1.0.0-4.el6_0.1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2010:0888-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0888.html
Issue date: 2010-11-16

Topic

Updated openssl 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 Red Hat Enterprise Linux race condition important update Linux package update OpenSSL issue server security patch

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

649304 - CVE-2010-3864 OpenSSL TLS extension parsing race condition

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