Improper Check for Unusual or Exceptional Conditions in Palo Alto PAN-OS - CVE-2020-1999
Published: November 12, 2020 / Updated: November 12, 2020
Vulnerability identifier: #VU48409
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1999
CWE-ID: CWE-754
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect processing of exceptional conditions in the PAN-OS signature-based threat detection engine. A remote non-authenticated attacker can communicate with devices in the network in a way that is not analyzed for threats by sending data through specifically crafted TCP packets.
Affected software
Palo Alto PAN-OS
How to mitigate CVE-2020-1999
Install updates from vendor's website.
Palo Alto PAN-OS - addressed in versions 8.1.17, 9.0.11, 9.1.5