CVE-2020-1992: PAN-OS on PA-7000 Series: Varrcvr daemon network-based denial of service or privilege escalation
A format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card (LFC) allows remote attackers to crash the daemon creating a denial of service condition or potentially execute code with root privileges. This issue affects Palo Alto Networks PAN-OS 9.0 versions before 9.0.7; PAN-OS 9.1 versions before 9.1.2 on PA-7000 Series devices with an LFC installed and configured. This issue requires WildFire services to be configured and enabled. This issue does not affect PAN-OS 8.1 and earlier releases. This issue does not affect any other PA Series firewalls.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
PAN-OS on PA-7000 Series (Varrcvr daemon)to a version that resolves this vulnerability.Fixed in 9.0.7 - Upgrade
Upgrade
PAN-OS on PA-7000 Series (Varrcvr daemon)to a version that resolves this vulnerability.Fixed in 9.1.2 - Compensating control
Ensure WildFire services are not configured and enabled on affected PA-7000 Series devices with an LFC, since the issue requires WildFire services to be configured and enabled.
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1992?
CVE-2020-1992 has been classified as a high severity vulnerability due to its potential to crash the Varrcvr daemon and create a denial of service condition.
How do I fix CVE-2020-1992?
To fix CVE-2020-1992, upgrade the PAN-OS software on affected devices to a version later than 9.0.7 or 9.1.2.
Which devices are affected by CVE-2020-1992?
CVE-2020-1992 affects devices in the PA-7000 Series with a Log Forwarding Card running specific versions of PAN-OS.
Can CVE-2020-1992 allow code execution?
Yes, CVE-2020-1992 can potentially allow remote attackers to execute code with root privileges on vulnerable systems.
What is the impact of CVE-2020-1992?
The primary impact of CVE-2020-1992 is a denial of service condition that may disrupt the normal operation of the Varrcvr daemon.