EN

CVE-2022-0028

High
8.6
0.05.010.0
Year
2022
Published
Aug 10, 2022
Known Affected Devices
0
CVSS Score
8.6

What is CVE-2022-0028?

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.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AV
Attack Vector
Network

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
None

No authentication required. Any anonymous user can exploit this vulnerability.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Changed

Exploiting the vulnerability can affect other components beyond the vulnerable one.

C
Confidentiality Impact
None

No confidentiality impact. Sensitive data is not exposed.

I
Integrity Impact
None

No integrity impact. Data cannot be modified.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Palo Alto Networks Palo Alto PA-220 Palo Alto Networks Palo Alto PA-220R Palo Alto Networks Palo Alto PA-410 Palo Alto Networks Palo Alto PA-450 Palo Alto Networks Palo Alto PA-820 Palo Alto Networks Palo Alto PA-3250 Palo Alto Networks Palo Alto PA-3260 Palo Alto Networks Palo Alto PA-3410 Palo Alto Networks Palo Alto PA-3440 Palo Alto Networks Palo Alto PA-5220 Palo Alto Networks Palo Alto PA-5280 Palo Alto Networks Palo Alto PA-5420 Palo Alto Networks Palo Alto PA-5450 Palo Alto Networks Palo Alto PA-7500 Palo Alto Networks Palo Alto VM-100 Palo Alto Networks Palo Alto Panorama M-100 Palo Alto Networks Palo Alto Panorama M-200 Palo Alto Networks Palo Alto Panorama M-600

FAQ

How severe is CVE-2022-0028?

CVE-2022-0028 has a CVSS score of 8.6/10, rated as High. This is a high severity vulnerability and should be patched as soon as possible.

What does the CVSS score mean for CVE-2022-0028?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2022-0028 scores 8.6/10 (High). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2022-0028?

The list of devices confirmed to be affected by CVE-2022-0028 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2022-0028?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.