full-disclosure - [FD] Hikvision hik-connect.com authentication vulnerability

Open Source and information security mailing list archives

Message-Id: <0629E2AB-9BE9-495C-B70B-26E216FBECF2@gmail.com>
Date: Tue, 24 Apr 2018 16:33:49 +0300
From: Vangelis Stykas <evstykas@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Hikvision hik-connect.com authentication vulnerability

There is a full write up of this bug here: https://medium.com/@evstykas/hackvision-8f50924e56d <https://medium.com/@evstykas/hackvision-8f50924e56d>

Vulnerability Security Advisory < 20180424 >
=======================================================================
title: No validation on cookie values 
product: hik-connect.com and ezvizlife.com
vulnerable version: latest
fixed version:  fixed
CVE number: -
impact: critical
found: 2018-04-19
by: Vangelis Stykas & George Lavdanis

=======================================================================

Vendor description:
-------------------

Vulnerability overview/description:
-----------------------------------
1) No validation on cookie values 

Both cloud services (hik-connect.com and ezvizlife.com) rely on cookie value AS_UserID to authenticate the user.Directly changing the value to another valid User id will result in hijacking that user session and be access its cameras/DVRS and change its password and/or email and phone.As the user id is not an incremental number but a hash we will need a way of finding out valid User ids.
In order to do that we can use the https://xxx.ezvizlife.com/friend/queryByMobile.json or endpoint AFTER making that user a friend and get his userId.
That endpoints has a GET parameter (mobile) that will check for a user with username, email or phone number.
After that changing the cookie value to his user id will result in having us logged in as that user.

Proof of concept:
-----------------
1) No validation on cookie values:

### Details
* Attack Vector:                HTTP GET
* Prerequisites:                None
* CWE:                          CWE-784: Reliance on Cookies without Validation and Integrity Checking in a Security Decision
* Technical Impact:             Login as any user with no password required
* Vulnerable query URL:         /
* Vulnerable Cookie parameter:  AS_UserId

Vulnerable / tested versions:
-----------------------------
Http://www.hik-connect.com/ (and all geographically distributed servers)

Vendor contact timeline:
------------------------
2018-04-21: Sent initial report to Hikvision 

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: http://seclists.org/fulldisclosure/

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives