CVE-2022-0023 describes an improper handling of exceptional conditions in the DNS proxy feature of Palo Alto Networks PAN-OS software, affecting versions 8.1, 9.0, 9.1, 10.0, and 10.1. A meddler-in-the-middle attacker can send specially crafted traffic to the firewall, causing the service to restart unexpectedly, and repeated attempts lead to a denial-of-service for all PAN-OS services by forcing the device into maintenance mode. This vulnerability has a CVSS score of 5.9 (Medium), indicating a network-based attack with high impact on availability, but requiring high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion regarding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 8.1.0, < 8.1.22CPE matchmatch criteria | cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | ||
>= 9.0.0, < 9.0.16CPE matchmatch criteria | cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | ||
>= 9.1.0, < 9.1.13CPE matchmatch criteria | cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | ||
>= 10.0.0, < 10.0.10CPE matchmatch criteria | cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | ||
>= 10.1.0, < 10.1.5CPE matchmatch criteria | cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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