CVEvulnerability

CVE-2022-0023

5.9 MEDIUM Published 2022-04-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-04-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P
Weaknesses
CWE-755

Description

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.

Affected configurations

• paloaltonetworks pan-os (>= 8.1.0 < 8.1.22) • paloaltonetworks pan-os (>= 9.0.0 < 9.0.16) • paloaltonetworks pan-os (>= 9.1.0 < 9.1.13) • paloaltonetworks pan-os (>= 10.0.0 < 10.0.10) • paloaltonetworks pan-os (>= 10.1.0 < 10.1.5)

Related

Weakness · CWE (1)

  • CWE-755 Improper Handling of Exceptional Conditions weakness

References