Vulnerability identifier: #VU66399

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-0028

CWE-ID: CWE-406

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Palo Alto PAN-OS
Operating systems & Components / Operating system

Vendor: Palo Alto Networks, Inc.

Description

The vulnerability allows a remote attacker to perform DoS attack.

The vulnerability exists due to a misconfiguration of the PAN-OS URL filtering policy. A remote attacker can conduct reflected and amplified TCP denial-of-service (RDoS) attacks against other other system using the affected device as the source of the attack.

Successful exploitation of the vulnerability requires that the firewall configuration has a URL filtering profile with one or more blocked categories assigned to a security rule with a source zone that has an external facing network interface.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 10.2.0 - 10.2.2, 10.0.0 - 10.0.11, 10.1.0 - 10.1.6, 9.1 - 9.1.14-h1, 9.0 - 9.0.16-hf, 8.1 - 8.1.23

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External links
http://security.paloaltonetworks.com/CVE-2022-0028

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.