Gentoo Linux Security Advisory GLSA 200608-05 – LibVNCServer fails to properly validate protocol types effectively letting users decide what protocol to use, such as Type 1 – None. LibVNCServer will accept this security type, even if it is not offered by the server. Versions less than 0.8.2 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49041/glsa-200608-05.txt
Source: https://packetstormsecurity.com/files/49041/Gentoo-Linux-Security-Advisory-200608-5.html