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"ManageEngine EventLog Analyzer 10.0 - Information Disclosure"

Author

Exploit author

"Scott Goodwin"

Platform

Exploit platform

java

Release date

Exploit published date

2020-02-24

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# Exploit Title: ManageEngine EventLog Analyzer 10.0 - Information Disclosure
# Date: 2020-02-23
# Author:Scott Goodwin
# Vendor: https://www.manageengine.com/
# Software Link: https://www.manageengine.com/products/eventlog/
# CVE: CVE-2019-19774

Vulnerability Name: Authenticated Information Disclosure in ManageEngine EventLog Analyzer
Registered: CVE-2019-19774

Discoverer:
Scott Goodwin, OSCP
OCD Tech

Vendor of Product:
ManageEngine

Affected Product Code Base:
EventLog Analyzer - 10.0 SP1

Affected Component:
Affected ManageEngine endpoint: http://exampleclient:8400/event/runquery.do
This endpoint allows the ManageEngine user to execute commands against the
ManageEngine PostgreSQL database.

Attack Type:
Remote

Vulnerability Type:
Incorrect Access Control

Vulnerability Impact:
Authenticated Information Disclosure

Attack Vector:
To exploit the vulnerability, an authenticated user must execute a specially crafted
query against the ManageEngine database to bypass the built-in security controls and
extract credential data.

Vulnerability Description:
An issue was discovered in Zoho ManageEngine EventLog Analyzer 10.0 SP1.
By running "select hostdetails from hostdetails" at the /event/runquery.do endpoint,
it is possible to bypass the security restrictions that prevent even administrative
users from viewing credential data stored in the database, and recover the MD5 hashes
of the accounts used to authenticate the ManageEngine platform to the managed machines
on the network (most often administrative accounts). Specifically, this bypasses the
following restrictions: a query cannot mention "password", and a query result cannot
have a "password" column.

PoC: Run the database query: "select hostdetails from hostdetails" at the /event/runquery.do endpoint

Reporting Timeline:
10/30/2019: This vulnerability was reported to ManageEngine via the
Zoho/ManageEngine Bug Bounty program. They acknowledged the initial report.
12/12/2019: Vulnerability registered
12/13/2019: Vulnerability acknowledged and update (12110) made available to ManageEngine
customers.
12/13/2019: Public disclosure

Additional Information:
This query bypasses the following security restrictions implemented within Manage Engine:
  1. restrictions on queries that include the word "password". This query will output the
  value stored in the "password" field, without the word "password" actually appearing in
  the query. If the query contains the word "password" Manage Engine will not execute the query.
  2. restrictions on printing the password field to the screen in a column called "password".
  If the results of the query include a columncalled "password", Manage Engine will mask the
  password with a series of asterisks "". This query will output the entire contents of the table,
  without formatting is as a table within the web interface, which leads to bypass of this security
  control.

Remediated Product Version:
ManageEngine EventLog Analyzer Build 12110

Reference:
https://www.manageengine.com/products/eventlog/
https://www.manageengine.com/products/eventlog/features-new.html#release
https://gist.github.com/scottgoodwin90/19ccecdc9f5733c0a9381765cfc7fe39
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19774
https://ocd-tech.com
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import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/48119/?format=json')

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