VNC servers created with LibVNCServer accept insecure protocol types, even when the server does not offer it, resulting in unauthorized access to the server.
|Package||net-libs/libvncserver on all architectures|
|Affected versions||< 0.8.2|
|Unaffected versions||>= 0.8.2|
LibVNCServer is a GPL'ed library for creating VNC servers.
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.
An attacker could use this vulnerability to gain unauthorized access with the privileges of the user running the VNC server.
There is no known workaround at this time.
All LibVNCServer users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/libvncserver-0.8.2"
August 04, 2006
August 04, 2006: 01