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Vulnerability record · CVE-2017-1000479 · published 3 January 2018

CVE-2017-1000479: Netgate pfsense cross-site request forgery vulnerability

Netgate · Pfsense

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.

8.8 CVSS 3.0 High EPSS 33% · top 1.7% CWE-352 · Cross-site request forgery
8.8CVSS 3.0 base score, v2 6.8
33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2017/11/22/7 ExploitMailing ListThird Party Advisory
https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes Issue TrackingVendor Advisory
https://github.com/opnsense/core/commit/d218b225 PatchThird Party Advisory
https://github.com/pfsense/pfsense/commit/386d89b07 PatchThird Party Advisory
https://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html Third Party Advisory
https://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html ExploitThird Party Advisory
http://www.openwall.com/lists/oss-security/2017/11/22/7 ExploitMailing ListThird Party Advisory
https://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes Issue TrackingVendor Advisory
https://github.com/opnsense/core/commit/d218b225 PatchThird Party Advisory
https://github.com/pfsense/pfsense/commit/386d89b07 PatchThird Party Advisory
https://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html Third Party Advisory
https://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-16915Netgate pfsense path traversal vulnerabilityAn issue was discovered in pfSense through 2.4.4-p3. widgets/widgets/picture.widget.php uses the widgetkey parameter directly without sanitization (e…EPSS 3.7%9.8CVE-2019-12585Apcupsd os command injection vulnerabilityApcupsd 0.3.91_5, as used in pfSense through 2.4.4-RELEASE-p3 and other products, has an Arbitrary Command Execution issue in apcupsd_status.php.EPSS 5.0%9.6CVE-2020-21487Netgate pfsense cross-site scripting vulnerabilityCross Site Scripting vulnerability found in Netgate pfSense 2.4.4 and ACME package v.0.6.3 allows attackers to execute arbitrary code via the RootFol…EPSS 0.67%8.8CVE-2023-48123pfSense web GUI packet_capture.php remote code executionpfSense Plus 23.05.1 and earlier and pfSense CE 2.7.0 allow a remote attacker to execute arbitrary code through a crafted request to packet_capture.p…EPSS 68%analysed8.8CVE-2023-42326pfSense WebGUI GIF/GRE Interface Command InjectionNetgate pfSense 2.7.0 contains a command injection flaw in the interfaces_gif_edit.php and interfaces_gre_edit.php WebGUI components. A remote attack…EPSS 64%analysed8.8CVE-2023-27253pfSense restore_rrddata() command injection via crafted XML configNetgate pfSense 2.7.0 contains a command injection flaw in the restore_rrddata() function. An authenticated attacker can supply a crafted XML file to…EPSS 90%analysed8.8CVE-2022-24299Netgate pfsense improper input validation vulnerabilityImproper input validation vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions prior to 2.6.0 and pfSense Plus software version…EPSS 1.9%8.8CVE-2022-26019Netgate pfsense path traversal vulnerabilityImproper access control vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions prior to 2.6.0 and pfSense Plus software versions …EPSS 4.5%

Source: NIST National Vulnerability Database (record CVE-2017-1000479), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.