26th Sep 2002 [SBWID-5300]
COMMAND
OpenKeyServer cross site scripting allows code insertion in keys
SYSTEMS AFFECTED
OpenKeyServer version 1.2
PROBLEM
Sebastien Lemmens [http://securiteam.com] says :
A security vulnerability in the way the server returns results of key
queries allows attackers to insert malicious code into existing
replies. This is of particular danger when it comes to keyservers,
since the key information itself is usually considered as highly
trustworthy.
Example:
http://search.keyserver.net:11371/pks/lookup?template=netensearch%2Cnetennom
atch%2Cnetenerror&search=<iframe%20style="position:absolute;left:0;top:0"%20
%20frameborder=0%20scrolling=0%20noresize%20%20width=800%20height=900%20src=
http://www.securiteam.com/openkeyservertemp/></iframe>&op=index
(All < should be present and not replaced by <).
In order to complete the attack, all you need to do is create a few
small HTMLs on your server, causing anyone accessing the above URL to
not know he is no longer accessing keyserver.net but rather someone
else's server.
SOLUTION
None yet.