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Home >> Browse Vulnerability Assessment Database >> Misc. >> RealVNC Authentication Bypass Vulnerability

RealVNC Authentication Bypass Vulnerability

Vulnerability Assessment Summary Tries to bypass authentication using RealVNC Detailed Explanation for this Vulnerability Assessment Summary : The remote VNC server is prone to an authentication bypass issue. Description : The remote host appears to be running RealVNC, a VNC server for Windows and Linux/unix platforms. The version of RealVNC installed on the remote host permits a possible hacker to bypass authentication by simply requesting 'Type 1 - None' as the authentication type even though it is not explicitly configured to support that. By exploiting this issue, a possible hacker gains access to the affected host at the privilege level under which RealVNC operates, typically as Administrator under Windows. See also : http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html http://lists.grok.org.uk/pipermail/full-disclosure/2006-May/046039.html http://www.realvnc.com/products/free/4.1/release-notes.html http://www.realvnc.com/products/personal/4.2/release-notes.html http://www.realvnc.com/products/enterprise/4.2/release-notes.html Solution : Upgrade to RealVNC Free Edition 4.1.2 / Personal Edition 4.2.3 / Enterprise Edition 4.2.3 or later. Network Security Threat Level: High / CVSS Base Score : 7.0 (AV:R/AC:L/Au:NR/C:P/I:P/A:P/B:N) Networks Security ID: 17978 Vulnerability Assessment Copyright: This script is Copyright (C) 2006 Tenable Network Security

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