GLSA-200511-09 : Lynx: Arbitrary command execution

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-200511-09
(Lynx: Arbitrary command execution)

iDefense labs discovered a problem within the feature to execute
local cgi-bin programs via the 'lynxcgi:' URI handler. Due to a
configuration error, the default settings allow websites to specify
commands to run as the user running Lynx.

Impact :

A remote attacker can entice a user to access a malicious HTTP
server, causing Lynx to execute arbitrary commands.

Workaround :

Disable 'lynxcgi' links by specifying the following directive in
lynx.cfg:
TRUSTED_LYNXCGI:none

See also :

http://www.nessus.org/u?3509b5b3
http://www.gentoo.org/security/en/glsa/glsa-200511-09.xml

Solution :

All Lynx users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=www-client/lynx-2.8.5-r2'

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 20196 (gentoo_GLSA-200511-09.nasl)

Bugtraq ID:

CVE ID: CVE-2005-2929