CVE-2020-1992 : Vulnerability Insights and Analysis
Discover details about CVE-2020-1992, a format string vulnerability in Varrcvr daemon of PAN-OS on PA-7000 Series devices. Learn about impacts, affected versions, and mitigation steps.
This CVE-2020-1992 article provides details about a format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with implications such as remote code execution and denial of service.
Understanding CVE-2020-1992
This CVE involves the Varrcvr daemon in PAN-OS on PA-7000 Series devices, potentially leading to a denial of service or privilege escalation attack.
What is CVE-2020-1992?
A format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices allows attackers to crash the daemon, resulting in a denial of service or potential code execution with root privileges.
The Impact of CVE-2020-1992
- CVSS Base Score: 8.1 (High)
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- Confidentiality, Integrity, and Availability Impact: High
Technical Details of CVE-2020-1992
This section provides specific technical information about the vulnerability.
Vulnerability Description
The vulnerability exists in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card, enabling remote attackers to exploit it for denial of service or potential code execution.
Affected Systems and Versions
- Affected Versions: PAN-OS 9.0 versions before 9.0.7 and PAN-OS 9.1 versions before 9.1.2 on PA-7000 Series with LFC
- Unaffected Versions: PAN-OS 8.1., 8.0., 7.1.*
Exploitation Mechanism
The issue requires WildFire services to be configured and enabled, making it dependent on specific configurations.
Mitigation and Prevention
Learn how to address and prevent the CVE-2020-1992 vulnerability.
Immediate Steps to Take
- Update to PAN-OS 9.0.7, PAN-OS 9.1.2, or later versions to mitigate the vulnerability.
- Ensure WildFire services are configured and enabled only as needed.
Long-Term Security Practices
- Regularly update and patch PAN-OS to the latest available versions.
- Follow security best practices and review firewall configurations to enhance overall system security.
Patching and Updates
- Apply security patches provided by Palo Alto Networks for PAN-OS to address known vulnerabilities and enhance system security.