CVE-2020-10056 Explained : Impact and Mitigation
Learn about CVE-2020-10056, a privilege escalation vulnerability in Siemens AG's License Management Utility (LMU) allowing attackers to execute arbitrary commands with local SYSTEM privileges. Find mitigation steps and preventive measures here.
A vulnerability has been identified in License Management Utility (LMU) (All versions < V2.4) that could allow a local authenticated attacker to execute arbitrary commands on the server with local SYSTEM privileges.
Understanding CVE-2020-10056
This CVE involves a privilege escalation vulnerability in Siemens AG's License Management Utility (LMU) affecting versions below V2.4.
What is CVE-2020-10056?
The vulnerability allows local users to modify the configuration of the lmgrd service, executed with local SYSTEM privileges, enabling attackers to run arbitrary commands on the server.
The Impact of CVE-2020-10056
The vulnerability poses a significant risk as it could lead to unauthorized execution of commands with elevated privileges, potentially compromising the server's security.
Technical Details of CVE-2020-10056
Siemens AG's License Management Utility (LMU) vulnerability is detailed below:
Vulnerability Description
The lmgrd service in LMU runs with local SYSTEM privileges, allowing local users to alter its configuration, leading to arbitrary command execution by authenticated attackers.
Affected Systems and Versions
- Product: License Management Utility (LMU)
- Vendor: Siemens AG
- Versions Affected: All versions < V2.4
Exploitation Mechanism
The vulnerability can be exploited by local authenticated attackers to manipulate the lmgrd service's configuration and execute unauthorized commands with elevated privileges.
Mitigation and Prevention
To address CVE-2020-10056, follow these steps:
Immediate Steps to Take
- Update LMU to version V2.4 or higher to mitigate the vulnerability.
- Restrict access to the server to authorized personnel only.
Long-Term Security Practices
- Regularly monitor and audit server configurations and user activities.
- Implement the principle of least privilege to limit user access rights.
Patching and Updates
- Apply security patches and updates provided by Siemens AG promptly to address known vulnerabilities and enhance system security.