Vulnerability identifier: #VU62311

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-0023

CWE-ID: CWE-755

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 a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions in the DNS proxy feature. A remote attacker can send a specially crafted request to the server and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 10.1.0 - 10.1.4, 10.0.0 - 10.0.9, 9.0 - 9.0.15, 8.1 - 8.1.21-h1, 8.0 - 8.0.21

---

External links
http://security.paloaltonetworks.com/CVE-2022-0023

---

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?

No. We are not aware of malware exploiting this vulnerability.