Red Hat released update packages for openssl that fix one security issue for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having important security impact.
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.
With reference to Red Hat support forum, 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, 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.
This update is recommended to all OpenSSL users. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.
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 http://kbase.redhat.com/faq/docs/DOC-11259
Mr. Rob Hulswit has reported this bug to Red Hat.