Re: texis(CGI) Path Disclosure Vulnerability

[<mark-bugtraq () thunderstone com>]

In-Reply-To: <200202060513.g165DiV11177 () mail10 bigmailbox com>

THUNDERSTONE RESPONSE TO SECURITY ALERT

Thunderstone Software is aware of a report about a
"vulnerability" in one of our products, published
on Bugtraq. Thunderstone takes such concerns
seriously. We offer the following details for
concerned customers and users of our software. 

Texis issues an error message that reveals a web
server's "path to document root" and the operating
system the program was compiled under, if asked to
execute a script that does not exist. The message
is intended to aide in solving set-up or
configuration problems. 

Customers using vhttpd can use an EntryScript to
check for the existence of a script prior to
invoking texis, and take an appropriate action if
the script does not exist. 

A risk is present only if there is some additional
vulnerability on that same server. The reported
issue does not provide access to the server,
although it may be used by an attacker to narrow
the attack against other vulnerabilities. 

Although we consider the vulnerability minor, we
have initiated a modification to resolve the
issue. Customers who wish to take advantage of the
change should contact Thunderstone tech support. 

Some customers may prefer the current
functionality, which is not inadvertent or a
"bug." Rather, Thunderstone designed its software
to include this information for resolving web
server path problems, which are common. 

For additional information, please contact
Thunderstone Software, http://www.thunderstone.com