Vulnerability in Palo Alto Networks Pan-Os
CVE-2022-0023
An improper handling of exceptional conditions vulnerability exists in the DNS proxy feature of Palo Alto Networks PAN-OS software that enables a meddler-in-the-middle (MITM) to send specifically crafted traffic to the firewall that causes the service to restart unexpectedly. Repeated attempts to send this request result in denial-of-service to all PAN-OS services by restarting the device in maintenance mode. This issue does not impact Panorama appliances and Prisma Access customers. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.22; PAN-OS 9.0 versions earlier than PAN-OS 9.0.16; PAN-OS 9.1 versions earlier than PAN-OS 9.1.13; PAN-OS 10.0 versions earlier than PAN-OS 10.0.10; PAN-OS 10.1 versions earlier than PAN-OS 10.1.5. This issue does not impact PAN-OS 10.2.
EPSS: 0.007 (49.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Palo Alto Networks Pan-os — versions 10.2.*, 8.1, 9.1
- Palo Alto Networks Prisma Access — versions 3.0 Preferred, Innovation, 2.2 Preferred, 2.1 Preferred, Innovation
- Paloaltonetworks Pan-os
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@paloaltonetworks.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-0023?
- CVE-2022-0023 is a medium-severity vulnerability in Palo Alto Networks Pan-Os, classified under Improper Handling of Exceptional Conditions. CVSS score: 5.9/10. Published 2022-04-13.
- How severe is CVE-2022-0023?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2022-0023 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.