PAN-OS devices that have enabled the captive portal or multi-factor authentication features are vulnerable to a critical buffer overflow flaw.

CVE-2020-2040: Critical Buffer Overflow Vulnerability in PAN-OS Devices Disclosed

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.

The version of Palo Alto Networks PAN-OS running on the remote host is 8.0.x prior to 8.1.15 or 9.0.x prior to 9.0.9 or 9.1.x prior to 9.1.3. It is, therefore, affected by a buffer overflow condition in the Captive Portal or Multi-Factor Authentication interface. An unauthenticated, remote attacker can exploit this, via a malicious request to the Captive Portal or Multi-Factor Authentication interface, to disrupt system processes and potentially execute arbitrary code.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

CVE-2020-2040

critical

Tenable Plugins

critical