Vulnerability · Published Sep 9, 2020 · Assigned by palo_alto

CVE-2020-2040PAN-OS: Buffer overflow when Captive Portal or Multi-Factor Authentication (MFA) is enabled

Critical 9.8

In plain English

A critical-severity buffer overflow in PAN-OS from Palo Alto Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.9% (higher than 90% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)3.9%top 9.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially execute arbitrary code with root privileges by sending a malicious request to the Captive Portal or Multi-Factor Authentication interface. This issue impacts: All versions of PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 9.1 versions earlier than PAN-OS 9.1.3.

Affected products (as reported)

Vendor	Product	Versions
Palo Alto Networks	PAN-OS	8.0.*9.0 – before 9.0.99.1 – before 9.1.38.1 – before 8.1.15

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://security.paloaltonetworks.com/CVE-2020-2040 x_refsource_MISC