Usage of cryptographically weak protocol in Palo Alto PAN-OS

1) Cryptographic issues

EUVDB-ID: #VU29608

Risk: Low

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

CVE-ID: CVE-2020-1982

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to decrypt TLS traffic.

The vulnerability exists due to PAN-OS supports TLS 1.0 protocol that is known to be a cryptographically weak protocol. A remote attacker with ability to conduct a Man-in-the-Middle (MitM) attack can theoretically decrypt communication.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 8.0 - 9.1.2

CPE2.3

• cpe:2.3:o:palo_alto_networks:pan-os:8.0.21:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:8.1.14:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:9.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:palo_alto_networks:pan-os:9.1.2:*:*:*:*:*:*:*

External links

http://security.paloaltonetworks.com/CVE-2020-1982

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.