Type packetstorm
Reporter Tri Huynh
Modified 2004-03-24T00:00:00


TrendMicro Interscan Viruswall Directory Traversal  
PROGRAM: TrendMicro Interscan Viruswall  
VULNERABLE VERSIONS: - 3.5x (Windows)  
- Unix/Solaris version is  
not tested but possibly  
InterScan VirusWall provides intelligent content scanning  
to prevent virus outbreaks. It blocks spam, non-business  
related messages, and attachments to protect enterprise  
network and business integrity.  
Interscan Web Viruswall, a part of Interscan Viruswall package, is a web  
proxy/gateway service that has a responsibility to scan virus  
"on-the-fly" before it reach the user browser. In Interscan  
Web Viruswall, there is a builtin mechanism that  
allows anybody to read files at the /ishttp/localweb directory by using  
such an URL: http://victimIP:8080/ishttpd/localweb/filename. Other URLs  
point to  
different directories (except sub-directories of "localweb") won't  
trigger the  
mechanism and will be forwarded to the proxy which the service  
is set up to. The reason there such a "feature" is because Interscan  
Web Viruswall has another feature (not turned on by default) called  
TeleWindow which uses an applet (/ishttpd/localweb/java/  
to allow user to see the scanning process. Unfortunately, that built-in  
webserver has a directory traversal problem. By using such an URL like  
an evil genius ;-) can access to files outside the  
localweb directory:  
will download the service executable file or  
will download the autoexec.bat file in the root directory.  
Administrators should be aware that even the TeleWindow feature is not  
turned on, the vulnerability can sill be exploited since the  
mini-webserver is hardcoded and it can't be turned off by using the  
Apply the patch from TrendMicro or temporarily stop using the Interscan  
Web Viruswall until the patch is issued.  
Update: The technical support email was  
sent an email concern about this problem. However, it has been 6 days  
and we haven't received any reponses yet.  
Discovered by Tri Huynh from SentryUnion  
The information within this paper may change without notice. Use of  
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