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pfSense pfBlocker-NG - Remote Code Execution (CVE-2022-31814)

Severity
CVSSv3 Score
9.8
Exploitable with Sniper
Yes
Vulnerability description

pfSense is affected by a Remote Code Execution, located in the /pfblockerng/www/index.php endpoint. The root cause of this vulnerability consists in insufficient sanitization in the Host header. This allows a malicious unauthenticated attacker to execute arbitrary code on the server through payloads sent in the Host header.

Exploit capabilities

Sniper can gain unauthenticated Remote Code Execution on the target system and extract multiple artefacts as evidence.

Risk description

The risk exists that a remote unauthenticated attacker can fully compromise the pfSense server in order to steal confidential information, install ransomware or pivot to the internal network.

Recommendation

Upgrade the pfBlocker-NG package to the latest version or to a version greater than 2.1.4_26.

Detectable with
Network Scanner
Vuln date
May 2021
Published at
Updated at
Software Type
Firewall
Vendor
Rubicon Communications
Product
pfBlocker-NG Package
Codename
Not available