#VU27900 Improper Authorization in Palo Alto PAN-OS - CVE-2020-1996

Vulnerability identifier: #VU27900

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1996

CWE-ID: CWE-285

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 bypass authorization and manipulate log files.

The vulnerability exists in the management server component of PAN-OS Panorama. A remote non-authenticated attacker can send a specially crafted request to the system and inject messages into the management server ms.log file.

Successful exploitation of the vulnerability may allow an attacker to obfuscate log files and hide malicious presence on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 7.1.0 - 7.1.26, 8.0.0 - 8.0.21, 8.1.0 - 8.1.13, 9.0.0 - 9.0.8

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External links
https://security.paloaltonetworks.com/CVE-2020-1996

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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.