Reporter Tri Huynh
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
different directories (except sub-directories of "localweb") won't
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/telewind.zip)
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
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 email@example.com 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
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