#VU101970 Improper Check for Unusual or Exceptional Conditions in Palo Alto PAN-OS - CVE-2024-3393

Vulnerability identifier: #VU101970

Vulnerability risk: High

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2024-3393

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: Yes

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 error handling in the DNS Security feature. A remote attacker can send specially crafted DNS packets through the data plane of the firewall and perform a denial of service (DoS) attack.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 10.1.14-h1 - 10.1.14, 10.2.8-h1 - 10.2.13, 11.0 - 11.0.6, 11.1 - 11.1.4, 11.2 - 11.2.2

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External links
https://security.paloaltonetworks.com/CVE-2024-3393

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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.