Oracle Linux 5 / 6 : mod_nss (ELSA-2013-1779)
Medium Nessus Plugin ID 71187
SynopsisThe remote Oracle Linux host is missing a security update.
DescriptionFrom Red Hat Security Advisory 2013:1779 :
An updated mod_nss package that fixes one security issue is 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.
The mod_nss module provides strong cryptography for the Apache HTTP Server via the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, using the Network Security Services (NSS) security library.
A flaw was found in the way mod_nss handled the NSSVerifyClient setting for the per-directory context. When configured to not require a client certificate for the initial connection and only require it for a specific directory, mod_nss failed to enforce this requirement and allowed a client to access the directory when no valid client certificate was provided. (CVE-2013-4566)
Red Hat would like to thank Albert Smith of OUSD(AT&L) for reporting this issue.
All mod_nss users should upgrade to this updated package, which contains a backported patch to correct this issue. The httpd service must be restarted for this update to take effect.
SolutionUpdate the affected mod_nss package.