SB2011052605 - Input validation error in TigerVNC

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Main Vulnerability Database SB2011052605

SB2011052605 - Input validation error in TigerVNC

Published: May 26, 2011 Updated: August 11, 2020

Security Bulletin ID SB2011052605
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Input validation error (CVE-ID: CVE-2011-1775)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.


Remediation

Install update from vendor's website.

References