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

High Nessus Plugin ID 24868


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


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.


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

See Also

Plugin Details

Severity: High

ID: 24868

File Name: gentoo_GLSA-200703-19.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2007/03/19

Modified: 2018/01/12

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:ltsp, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2007/03/18

Vulnerability Publication Date: 2006/07/05

Reference Information

CVE: CVE-2006-2450

OSVDB: 27137

GLSA: 200703-19