pfSense versions 2.4.1 and lower are vulnerable to clickjacking attacks...
Vulnerability Description
pfSense versions 2.4.1 and lower are vulnerable to clickjacking attacks in the CSRF error page resulting in privileged execution of arbitrary code, because the error detection occurs before an X-Frame-Options header is set. This is fixed in 2.4.2-RELEASE. OPNsense, a 2015 fork of pfSense, was not vulnerable since version 16.1.16 released on June 06, 2016. The unprotected web form was removed from the code during an internal security audit under "possibly insecure" suspicions.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes
- https://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html
- https://github.com/opnsense/core/commit/d218b225
- https://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html
- https://github.com/pfsense/pfsense/commit/386d89b07
- http://www.openwall.com/lists/oss-security/2017/11/22/7
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CVSS Vectors
Weaknesses (CWE)
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MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.