LTSP: Authentication bypass in included LibVNCServer code
Gentoo Linux Security Advisory
||GLSA 200703-19 / ltsp
||March 18, 2007
||March 18, 2007: 01
All supported architectures
LTSP includes a version of libVNCServer that is vulnerable to an
The Linux Terminal Server Project adds thin-client support to Linux
The LTSP server includes vulnerable LibVNCServer code, which fails to
properly validate protocol types effectively letting users decide what
protocol to use, such as "Type 1 - None" (GLSA-200608-05). The LTSP VNC
server will accept this security type, even if it is not offered by the
An attacker could exploit 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 LTSP users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/ltsp-4.2-r1"