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

high Nessus Plugin ID 24868

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.

Solution

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

See Also

https://security.gentoo.org/glsa/200608-05

https://security.gentoo.org/glsa/200703-19

Plugin Details

Severity: High

ID: 24868

File Name: gentoo_GLSA-200703-19.nasl

Version: 1.17

Type: local

Published: 3/19/2007

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

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: 3/18/2007

Reference Information

CVE: CVE-2006-2450

GLSA: 200703-19