Test ID:	1.3.6.1.4.1.25623.1.0.801898
Category:	General
Title:	TigerVNC SSL Certificate Validation Security Bypass Vulnerability - Windows
Summary:	TigerVNC is prone to a security bypass vulnerability.
Description:	Summary: TigerVNC is prone to a security bypass vulnerability. Vulnerability Insight: The flaw is caused by improper verification of server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate. Vulnerability Impact: Successful exploitation allows attackers to perform man-in-the-middle attacks or impersonate trusted servers, which will aid in further attacks. Affected Software/OS: TigerVNC version 1.1beta1 Solution: No known solution was made available for at least one year since the disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one. CVSS Score: 5.8 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2011-1775 44939 http://secunia.com/advisories/44939 47738 http://www.securityfocus.com/bid/47738 FEDORA-2011-6838 http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060567.html RHSA-2011:0871 http://www.redhat.com/support/errata/RHSA-2011-0871.html [oss-security] 20110506 CVE request: tigervnc http://openwall.com/lists/oss-security/2011/05/06/2 [oss-security] 20110509 Re: CVE request: tigervnc http://openwall.com/lists/oss-security/2011/05/09/7 [tigervnc-devel] 20110504 Re: potential vulnerability in TLS secType? http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01345.html [tigervnc-devel] 20110504 potential vulnerability in TLS secType? http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01342.html [tigervnc-devel] 20110505 Re: potential vulnerability in TLS secType? http://www.mail-archive.com/tigervnc-devel%40lists.sourceforge.net/msg01347.html https://bugzilla.redhat.com/show_bug.cgi?id=702470 https://bugzilla.redhat.com/show_bug.cgi?id=702672
Copyright	Copyright (C) 2011 Greenbone AG

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