CVE-2020-15261 Explained : Impact and Mitigation
Learn about CVE-2020-15261, an unquoted service path vulnerability in Veyon allowing local users with admin privileges to run malicious executables. Mitigation steps included.
On Windows, the Veyon Service before version 4.4.2 contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. This vulnerability is only dangerous in unsafe setups where users have administrative privileges. The issue has been addressed in version 4.4.2. To mitigate, revoke administrative privileges from untrustworthy users.
Understanding CVE-2020-15261
This CVE involves an unquoted service path vulnerability in Veyon, impacting Windows systems.
What is CVE-2020-15261?
The vulnerability in the Veyon Service allows local users with administrative privileges to execute malicious executables with elevated privileges, posing a risk in insecure environments.
The Impact of CVE-2020-15261
- CVSS Score: 8 (High Severity)
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: High
- Confidentiality, Integrity, and Availability Impact: High
- Scope: Changed
- The vulnerability can be exploited by authenticated users to escalate privileges and execute arbitrary code.
Technical Details of CVE-2020-15261
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The unquoted service path vulnerability in Veyon allows users with administrative privileges to run malicious executables with elevated system privileges.
Affected Systems and Versions
- Affected Product: Veyon
- Vendor: Veyon
- Vulnerable Versions: < 0.11.5
Exploitation Mechanism
- Locally authenticated users with administrative privileges can exploit the vulnerability to execute arbitrary code with elevated privileges.
Mitigation and Prevention
Protect your systems from CVE-2020-15261 by following these mitigation strategies.
Immediate Steps to Take
- Update Veyon to version 4.4.2 or later to eliminate the vulnerability.
- Revoke administrative privileges from users who do not require them.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user permissions.
- Regularly monitor and audit user privileges to prevent unauthorized access.
Patching and Updates
- Stay informed about security updates for Veyon and apply patches promptly to address known vulnerabilities.