National Vulnerability Database (NVD) National Vulnerability Database (CVE-2011-1775)

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Last updated: Tue May 21 05:43:59 EDT 2013

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Vulnerability Summary for CVE-2011-1775

Original release date:05/26/2011

Last revised:09/07/2011

Source: US-CERT/NIST

Overview

The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:5.8 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:P/A:N) (legend)

Impact Subscore: 4.9

Exploitability Subscore: 8.6

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification

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External Source: MLIST

Name: [tigervnc-devel] 20110505 Re: potential vulnerability in TLS secType?

Type: Patch Information

Hyperlink:http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01347.html

External Source: MLIST

Name: [tigervnc-devel] 20110504 Re: potential vulnerability in TLS secType?

Type: Patch Information

Hyperlink:http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg01345.html

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=702672

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=702672

External Source: CONFIRM