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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 1 product from paloaltonetworks organizations running these solutions should prioritize assessment and patching.
Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2022-08-10T16:15:08.343
2025-11-04T16:49:41.863
Analyzed
CVSSv3.1: 8.6 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | paloaltonetworks | pan-os | < 8.1.23 | Yes |
| Operating System | paloaltonetworks | pan-os | < 9.0.16 | Yes |
| Operating System | paloaltonetworks | pan-os | < 9.1.14 | Yes |
| Operating System | paloaltonetworks | pan-os | < 10.0.11 | Yes |
| Operating System | paloaltonetworks | pan-os | < 10.1.6 | Yes |
| Operating System | paloaltonetworks | pan-os | < 10.2.2 | Yes |
| Operating System | paloaltonetworks | pan-os | 8.1.23 | Yes |
| Operating System | paloaltonetworks | pan-os | 9.0.16 | Yes |
| Operating System | paloaltonetworks | pan-os | 9.0.16 | Yes |
| Operating System | paloaltonetworks | pan-os | 9.1.14 | Yes |
| Operating System | paloaltonetworks | pan-os | 9.1.14 | Yes |
| Operating System | paloaltonetworks | pan-os | 10.0.11 | Yes |
| Operating System | paloaltonetworks | pan-os | 10.1.6 | Yes |
| Operating System | paloaltonetworks | pan-os | 10.1.6 | Yes |
| Operating System | paloaltonetworks | pan-os | 10.2.2 | Yes |
| Operating System | paloaltonetworks | pan-os | 10.2.2 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For paloaltonetworks's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.