Description
pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Status: Monitoring privilege to inject arbitrary JavaScript via graph configuration parameters in /status_monitoring.php. Multiple POST parameters including graph-left, graph-right, time-period, resolution, start-date, end-date, start-time, end-time, graph-type, invert, and refresh-interval are concatenated and written to the global pfSense XML configuration without sanitization, then echoed unsanitized into a JavaScript string context on page render. Because the setting is stored in the global configuration, the payload executes in the browser of every user who visits the Status: Monitoring page.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
Passive
Confidentiality (Vulnerable System)
None
Integrity (Vulnerable System)
None
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
Low
Integrity (Subsequent System)
Low
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected products
- Netgate / pfSense CE0 – 2.9.0
- Netgate / pfSense Plus0 – 26.07
References
- MISChttps://docs.netgate.com/downloads/pfSense-SA-26_09.packages.asc
- MISChttps://docs.netgate.com/pfsense/en/latest/releases/26-07.html
- MISChttps://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-status-monitoring-php
Updated 16m ago · 8 sources