ManageEngine OpManager 12.3 Privilege Escalation

2019.01.22
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-264

ManageEngine OpManager Privilege Escalation Vendor: Zoho Corporation Pvt. Ltd. Product web page: https://www.manageengine.com Affected version: 12.3 Summary: OpManager offers comprehensive network monitoring capabilities that help you monitor network performance, detect network faults in real time, troubleshoot errors, and prevent downtime. Being a powerful network monitor, it supports multi-vendor IT environments and can scale to fit your network, regardless of its size. Monitor your devices and network to gain complete visibility and control over your entire network infrastructure. It allows you to monitor critical performance metrics like availability, CPU, disk space, and memory utilization across physical and virtual servers. Description: The OpManager Monitoring service suffers from a weak permissions issue in which an attacker can replace the service binary with a binary of his choice. This service runs as Localsystem thus allowing for a privilege escalation vector. Tested on: Microsoft Windows 7 x64 Vulnerability discovered by Humberto Cabrera @zeroscience Advisory ID: ZSL-2019-5504 Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5504.php 14.01.2019 -- C:\Users\User>sc qc opmanager [SC] QueryServiceConfig SUCCESS SERVICE_NAME: opmanager TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : C:\ManageEngine\OpManager\bin\wrapper.exe -s C:\ManageEngine\OpManager\conf\wrapper.conf LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : ManageEngine OpManager DEPENDENCIES : SERVICE_START_NAME : LocalSystem C:\ManageEngine\OpManager\bin>icacls wrapper.exe wrapper.exe BUILTIN\Administrators:(I)(F) NT AUTHORITY\SYSTEM:(I)(F) BUILTIN\Users:(I)(RX) NT AUTHORITY\Authenticated Users:(I)(M) <==- Weak Permissions allowing the modification of the service binary


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