#VU21372 Cross-site request forgery in pfsense - CVE-2019-16667

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Main Vulnerability Database Vulnerabilities #VU21372

#VU21372 Cross-site request forgery in pfsense - CVE-2019-16667

Published: September 27, 2019 / Updated: June 17, 2021


Vulnerability identifier: #VU21372
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2019-16667
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
pfsense
Software vendor:
Rubicon Communications

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in diag_command.php script. A remote attacker can trick the victim to visit a specially crafted web page and and update "txtCommand" and "txtRecallBuffer" fields.

Successful exploitation of the vulnerability may allow an attacker to execute arbitrary OS commands on the system.

Example:

Remediation

Install update from vendor's website.

External links