pfSense: pfSense-SA-20_03.webgui: XSS vulnerability in the WebGUI
Description
A Cross-Site Scripting (XSS) vulnerability was found in services_captiveportal_mac.php, a component of the pfSense software WebGUI, on version 2.4.4-p3 and earlier. The page did not encode the username or delmac parameters in its output, leading to a possible XSS. To take advantage of this XSS, the following prerequisites must be met: 1. There must be at least one Captive Portal zone defined 2. The attacker must know the name of a valid Captive Portal zone 3. There must be at least one pass-through MAC entry defined Due to the lack of proper encoding on the affected parameters susceptible to XSS, arbitrary JavaScript could be executed in the user's browser. The user's session cookie or other information from the session may be compromised.
Solution(s)
- pfsense-upgrade-latest
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
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