Remote code execution in PAN-OS GlobalProtect Portal and Gateway interfaces

1) Memory corruption

EUVDB-ID: #VU58105

Risk: Critical

CVSSv4.0: 8.9 [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:P/U:Red]

CVE-ID: CVE-2021-3064

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the PAN-OS firewall configurations with a GlobalProtect portal or gateway enabled. A remote non-authenticated attacker can send a specially crafted request to the system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 8.1 - 8.1.16

CPE2.3

• cpe:2.3:o:palo_alto_networks:pan-os:8.1:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.0:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.1:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.2:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.3:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.4:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.4-h2:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.5:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.6:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.6-h2:*:*:*:*:*:*:*

External links

https://security.paloaltonetworks.com/CVE-2021-3064
https://www.randori.com/blog/cve-2021-3064/

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. However, proof of concept for this vulnerability is available.