#VU66399 Insufficient Control of Network Message Volume in Palo Alto PAN-OS - CVE-2022-0028

Vulnerability identifier: #VU66399

Vulnerability risk: Medium

CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Green]

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: 8.1 - 8.1.23, 9.0 - 9.0.16, 9.1 - 9.1.14, 9.2.0, 10.0.0 - 10.0.11, 10.1.0 - 10.1.6, 10.2.0 - 10.2.2

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External links
https://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.