CentOS 5 / 6 : mod_nss (CESA-2013:1779)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote CentOS host is missing a security update.

Description :

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.

See also :

http://www.nessus.org/u?1d76705d
http://www.nessus.org/u?2710b3b0

Solution :

Update the affected mod_nss package.

Risk factor :

Medium / CVSS Base Score : 4.0
(CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N)
CVSS Temporal Score : 3.5
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: CentOS Local Security Checks

Nessus Plugin ID: 71179 ()

Bugtraq ID: 64114

CVE ID: CVE-2013-4566