CVE-2019-1161 Explained : Impact and Mitigation
Learn about CVE-2019-1161, a vulnerability in Microsoft Defender allowing unauthorized file deletion. Find affected systems and versions, exploitation details, and mitigation steps.
A vulnerability in the MpSigStub.exe component of Microsoft Defender allows unauthorized file deletion, posing an elevation of privilege risk.
Understanding CVE-2019-1161
What is CVE-2019-1161?
This vulnerability, also known as the 'Microsoft Defender Elevation of Privilege Vulnerability,' enables attackers to delete files in any location by gaining system access.
The Impact of CVE-2019-1161
The vulnerability could lead to unauthorized file deletion, potentially allowing attackers to escalate privileges on the affected system.
Technical Details of CVE-2019-1161
Vulnerability Description
The MpSigStub.exe component in Microsoft Defender permits unauthorized file deletion, requiring attacker system access for exploitation.
Affected Systems and Versions
- Microsoft Security Essentials (unspecified version)
- Microsoft System Center (2012 Endpoint Protection, Endpoint Protection, 2012 R2 Endpoint Protection)
- Microsoft Forefront Endpoint Protection (2010)
- Various versions of Windows Defender on different Windows systems
Exploitation Mechanism
To exploit this vulnerability, attackers must log in to the system, gaining access to execute unauthorized file deletions.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates from Microsoft promptly
- Monitor system logs for any suspicious activities
- Implement the principle of least privilege
Long-Term Security Practices
- Regularly update antivirus definitions
- Conduct security training for users on recognizing phishing attempts
Patching and Updates
Ensure all affected systems are updated with the latest security patches from Microsoft.