#VU23777 Improper restriction of communication channel to intended endpoints in Palo Alto PAN-OS - CVE-2019-17440

Vulnerability identifier: #VU23777

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-17440

CWE-ID: CWE-923

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 compromise the affected system.

The vulnerability exists due to improper restriction of communications to Log Forwarding Card (LFC) on PA-7000 Series devices with second-generation Switch Management Card (SMC). A remote attacker with network access to the LFC can gain perform a spoofing attack and gain root privileges on the device.

Mitigation

The vulnerability affects PAn-OS on PA-7080 and PA-7050 devices with an LFC installed and configured.

To resolve the vulnerability, update PAN-OS to version 9.0.5-h3.

Vulnerable software versions

Palo Alto PAN-OS: 9.0.0 - 9.0.5

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External links
https://securityadvisories.paloaltonetworks.com/Home/Detail/203

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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?

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