CVE-2020-2011 Explained : Impact and Mitigation
Learn about CVE-2020-2011, an improper input validation vulnerability in Palo Alto Networks PAN-OS Panorama, allowing remote unauthenticated users to crash the configuration service, leading to denial of service. Find out affected versions and mitigation steps.
An improper input validation vulnerability in the configuration daemon of Palo Alto Networks PAN-OS Panorama allows for a remote unauthenticated user to send a specifically crafted registration request to the device that causes the configuration service to crash, leading to denial of service. This CVE affects various versions of PAN-OS.
Understanding CVE-2020-2011
This CVE involves an improper input validation vulnerability in Palo Alto Networks PAN-OS Panorama, impacting the device's configuration service.
What is CVE-2020-2011?
This CVE refers to a vulnerability in PAN-OS Panorama that enables a remote unauthenticated user to crash the configuration service by sending a malicious registration request, resulting in denial of service.
The Impact of CVE-2020-2011
The vulnerability has a CVSS base score of 7.5 (High severity) with a low attack complexity. It can lead to a denial of service for all PAN-OS Panorama services.
Technical Details of CVE-2020-2011
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows remote unauthenticated users to crash the configuration service by sending a crafted registration request, causing denial of service.
Affected Systems and Versions
- PAN-OS 7.1
- PAN-OS 8.0
- PAN-OS 8.1 versions earlier than 8.1.14
- PAN-OS 9.0 versions earlier than 9.0.7
- PAN-OS 9.1 versions earlier than 9.1.0
Exploitation Mechanism
The vulnerability can be exploited by sending a specially crafted registration request to the device's configuration daemon, triggering a crash and subsequent denial of service.
Mitigation and Prevention
Effective mitigation strategies and preventive measures for CVE-2020-2011.
Immediate Steps to Take
- Apply the provided solutions by upgrading to PAN-OS 8.1.14, PAN-OS 9.0.7, or later versions.
- Follow best practices for securing the PAN-OS management interface.
Long-Term Security Practices
- Regularly update and patch PAN-OS to the latest versions.
- Implement network segmentation and access controls to limit exposure.
Patching and Updates
- Ensure all PAN-OS versions are up to date to prevent exploitation of this vulnerability.