QID 34078

Date Published: 2021-05-19

QID 34078: pfSense Cross Site Scripting Vulnerability

pfSense is an open-source firewall/router which based on FreeBSD. pfsense can be deployed as a perimeter firewall, router, wireless access point, DHCP server, DNS server and VPN endpoint.

pfSense is prone to a cross-site scripting vulnerability.

Affected versions:
pfsense versions prior to 2.5.1

QID detection logic (unauthenticated):
The QID checks for vulnerable versions of pfSense the version for pfSense is retrieved via SNMP.

Successful exploitation of this vulnerabilitiy can result in cross-site scripting which can lead to to execute arbitrary script code in the browser.

  • CVSS V3 rated as High - 6.1 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    Customers are advised to install Pfsense 2.5.1 or later versions to remediate this vulnerabilities.
    Vendor References

    CVEs related to QID 34078

    CVE-2021-27933 |
    Software Advisories
    Advisory ID Software Component Link
    pfSense Version 2.5.1 URL Logo www.pfsense.org/download/
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