CVE-2017-1000479

HIGH 8.8CVE-2017-1000479 · Published 03/01/2018 · updated 17/06/2026

Package	Affected versions	Patched versions
pfsense netgate	`≤ 2.4.1`	No fix yet
opnsense opnsense_project	`< 16.1.16`	`16.1.16`

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.

References

openwall.com/lists/oss-security/2017/11/22/7 · Exploit
doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes · Issue Tracking
opnsense/core commit d218b22 · Patch
pfsense/pfsense commit 386d89b · Patch
netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html · Third Party Advisory
securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html · Exploit

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