CVE-2022-0028
Palo Alto Networks · published 2022-08-10
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2022-08-22).
- CISA's name for it: Palo Alto Networks PAN-OS Reflected Amplification Denial-of-Service Vulnerability
- CISA's description: A Palo Alto Networks PAN-OS URL filtering policy misconfiguration could allow a network-based attacker to conduct reflected and amplified TCP denial-of-service (RDoS) attacks.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Palo Alto Networks, Inc. via the CVE Program.
A PAN-OS URL filtering policy misconfiguration could allow a network-based attacker to conduct reflected and amplified TCP denial-of-service (RDoS) attacks. The DoS attack would appear to originate from a Palo Alto Networks PA-Series (hardware), VM-Series (virtual) and CN-Series (container) firewall against an attacker-specified target. To be misused by an external attacker, the firewall configuration must have a URL filtering profile with one or more blocked categories assigned to a source zone that has an external facing interface. This configuration is not typical for URL filtering and, if set, is likely unintended by the administrator. If exploited, this issue would not impact the confidentiality, integrity, or availability of our products. However, the resulting denial-of-service (DoS) attack may help obfuscate the identity of the attacker and implicate the firewall as the source of the attack. We have taken prompt action to address this issue in our PAN-OS software. All software updates for this issue are expected to be released no later than the week of August 15, 2022. This issue does not impact Panorama M-Series or Panorama virtual appliances. This issue has been resolved for all Cloud NGFW and Prisma Access customers and no additional action is required from them.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Palo Alto Networks | Cloud NGFW | All: unaffected |
| Palo Alto Networks | PAN-OS | 8.1 – before 8.1.23-h1: affected 9.0 – before 9.0.16-h3: affected 9.1 – before 9.1.14-h4: affected 10.0 – before 10.0.11-h1: affected 10.1 – before 10.1.6-h6: affected 10.2 – before 10.2.2-h2: affected |
| Palo Alto Networks | Prisma Access | 2.1 All: unaffected 2.2 All: unaffected 3.0 All: unaffected 3.1 All: unaffected |
Added by CISA-ADP (Authorized Data Publisher)
| Vendor | Product | Versions |
|---|---|---|
| paloaltonetworks | pan-os | 8.1.0 – before 8.1.23-h: affected |
| paloaltonetworks | pan-os | 9.0.0 – before 9.0.16-h3: affected |
| paloaltonetworks | pan-os | 9.1.0 – before 9.1 < 9.1.14-h4: affected |
| paloaltonetworks | pan-os | 10.0.0 – before 10.0.11-h1: affected |
| paloaltonetworks | pan-os | 10.1.0 – before 10.1.6-h6: affected |
| paloaltonetworks | pan-os | 10.2.0 – before 10.2.2-h2: affected |
Products named in NVD's CPE match criteria (1)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 8.6 HIGH — as published by Palo Alto Networks, Inc. (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - CVSS 3.1: 8.6 HIGH — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
CWE-406, NVD-CWE-Other
Sources
References the source lists
- https://security.paloaltonetworks.com/CVE-2022-0028
- https://security.paloaltonetworks.com/CVE-2022-0028
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0028
Source dates: published 2022-08-10, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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