CVE-2022-0028 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2022-0028
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
3.62 Probability of exploitation activity being observed over the next 30 days (87th percentile)
CVSS score for CVE-2022-0028
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
8.6 High
Products affected by CVE-2022-0028
PAN-OS 8.1.5
PAN-OS 8.1.6
PAN-OS 8.1.7
PAN-OS 8.1.8
PAN-OS 8.1.9
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2022-0028 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 219 29.16%
CN 65 8.66%
IN 31 4.13%
TH 28 3.73%
CA 27 3.60%
IT 22 2.93%
ID 18 2.40%
GB 17 2.26%
TW 17 2.26%
VN 16 2.13%

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CVE-2022-0028 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 216 52.43%
Technology 130 31.55%
Government/Politics 11 2.67%
Education 9 2.18%
Transportation 8 1.94%
Business Services 7 1.70%
Media/Entertainment 5 1.21%
Energy/Resources 4 0.97%
Consumer Goods 4 0.97%
Finance 3 0.73%

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