CVE-2011-1775

NameCVE-2011-1775
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tigervnc (PTS)stretch1.7.0+dfsg-7+deb9u1fixed
buster1.9.0+dfsg-3+deb10u1fixed
bullseye, sid1.10.1+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tigervncsource(unstable)(not affected)

Notes

- tigervnc <not-affected> (Fixed before initial release in Debian)
https://github.com/TigerVNC/tigervnc/commit/ce6c8b097f0d5b161039dc8c8208aff078d433ff

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