Moderate CentOS mod_nss Update


mod_nss-1.0.8-19.el6_5.i686.rpm, mod_nss-1.0.8-19.el6_5.src.rpm, mod_nss-1.0.8-19.el6_5.x86_64.rpm, mod_nss-1.0.8-8.el5_10.i386.rpm, mod_nss-1.0.8-8.el5_10.src.rpm, mod_nss-1.0.8-8.el5_10.x86_64.rpm,,
2018-01-18 11:06
2017-07-27 19:06
2017-04-01 19:07
2017-01-05 20:11


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.

Red Hat would like to thank Albert Smith of OUSD(AT&L) for reporting this

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.
Please see

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
5 mod_nss mod_nss-1.0.8-8.el5_10.i386.rpm
mod_nss mod_nss-1.0.8-8.el5_10.src.rpm
mod_nss mod_nss-1.0.8-8.el5_10.x86_64.rpm
6 mod_nss mod_nss-1.0.8-19.el6_5.i686.rpm
mod_nss mod_nss-1.0.8-19.el6_5.src.rpm
mod_nss mod_nss-1.0.8-19.el6_5.x86_64.rpm