GLSA-200703-19 : LTSP: Authentication bypass in included LibVNCServer code

This script is Copyright (C) 2007-2014 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-200703-19
(LTSP: Authentication bypass in included LibVNCServer code)

The LTSP server includes vulnerable LibVNCServer code, which fails to
properly validate protocol types effectively letting users decide what
protocol to use, such as 'Type 1 - None' (GLSA-200608-05). The LTSP VNC
server will accept this security type, even if it is not offered by the
server.

Impact :

An attacker could exploit this vulnerability to gain unauthorized
access with the privileges of the user running the VNC server.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml
http://www.gentoo.org/security/en/glsa/glsa-200703-19.xml

Solution :

All LTSP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-misc/ltsp-4.2-r1'

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: 24868 (gentoo_GLSA-200703-19.nasl)

Bugtraq ID:

CVE ID: CVE-2006-2450