Improper X.509 Certificate Verification in TigerVNC 1.1beta1

CVE-2011-1775 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:N

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.

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