GLSA-200509-12 : Apache, mod_ssl: Multiple vulnerabilities

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200509-12
(Apache, mod_ssl: Multiple vulnerabilities)

mod_ssl contains a security issue when 'SSLVerifyClient optional' is
configured in the global virtual host configuration (CAN-2005-2700).
Also, Apache's httpd includes a PCRE library, which makes it vulnerable
to an integer overflow (CAN-2005-2491).

Impact :

Under a specific configuration, mod_ssl does not properly enforce the
client-based certificate authentication directive, 'SSLVerifyClient
require', in a per-location context, which could be potentially used by
a remote attacker to bypass some restrictions. By creating a specially
crafted '.htaccess' file, a local attacker could possibly exploit
Apache's vulnerability, which would result in a local privilege
escalation.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200509-12.xml

Solution :

All mod_ssl users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-www/mod_ssl-2.8.24'
All Apache 2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=www-servers/apache-2.0.54-r15'

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:ND)
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 19811 (gentoo_GLSA-200509-12.nasl)

Bugtraq ID: 14620

CVE ID: CVE-2005-2491
CVE-2005-2700