#VU27901 NULL pointer dereference in Palo Alto PAN-OS - CVE-2020-1995

Vulnerability identifier: #VU27901

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-1995

CWE-ID: CWE-476

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 a NULL pointer dereference error in the rasmgr daemon. A remote authenticated administrator can send a specially crafted request to the system, trigger NULL pointer dereference error and cause denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 9.1.0 - 9.1.1

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External links
https://security.paloaltonetworks.com/CVE-2020-1995

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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