CVE-2020-1994 : Exploit Details and Defense Strategies
Learn about CVE-2020-1994, a vulnerability in PAN-OS allowing file corruption by local authenticated users. Find mitigation steps and impacted versions here.
A predictable temporary file vulnerability in PAN-OS allows a local authenticated user to corrupt system files, impacting system integrity.
Understanding CVE-2020-1994
What is CVE-2020-1994?
This CVE involves a vulnerability in PAN-OS that permits a local authenticated user with shell access to corrupt arbitrary system files.
The Impact of CVE-2020-1994
The vulnerability can lead to system file corruption, affecting system integrity but does not impact confidentiality or availability.
Technical Details of CVE-2020-1994
Vulnerability Description
The issue exists in all versions of PAN-OS 7.1 and 8.0, as well as specific versions of 8.1 and 9.0.
Affected Systems and Versions
- Affected: PAN-OS 7.1., 8.0., PAN-OS 8.1 < 8.1.13, PAN-OS 9.0 < 9.0.7
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Local
- Integrity Impact: High
- Privileges Required: High
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to PAN-OS 8.1.13, 9.0.7, or later versions
- Follow security best practices for local access
Long-Term Security Practices
- Regularly review and update security policies
- Implement least privilege access control
- Monitor system file integrity
Patching and Updates
- Vulnerability fixed in PAN-OS 8.1.13, 9.0.7, and later
- PAN-OS 8.0 is end-of-life, not covered by Product Security Assurance
- PAN-OS 7.1 on extended support, considered for critical fixes