HOMEVULNERABILITIESCVE-2017-1000479
HIGH

CVE-2017-1000479

CWE-352Published: January 3, 2018· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-1000479 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgate1 product(s)
pfsense
opnsense_project1 product(s)
opnsense
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/opnsense/core/commit/d218b225
PATCHhttps://github.com/pfsense/pfsense/commit/386d89b07
PATCHhttps://github.com/opnsense/core/commit/d218b225
PATCHhttps://github.com/pfsense/pfsense/commit/386d89b07
ADVISORYhttp://www.openwall.com/lists/oss-security/2017/11/22/7
ADVISORYhttps://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes
ADVISORYhttps://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html
ADVISORYhttps://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2017/11/22/7
ADVISORYhttps://doc.pfsense.org/index.php/2.4.2_New_Features_and_Changes
ADVISORYhttps://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.html
ADVISORYhttps://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.html

All References (12)

→
http://www.openwall.com/lists/oss-security/2017/11/22/7Exploit · Mailing List · Third Party Advisory
→
https://doc.pfsense.org/index.php/2.4.2_New_Features_and_ChangesIssue Tracking · Vendor Advisory
→
https://github.com/opnsense/core/commit/d218b225Patch · Third Party Advisory
→
https://github.com/pfsense/pfsense/commit/386d89b07Patch · Third Party Advisory
→
https://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.htmlThird Party Advisory
→
https://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.htmlExploit · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2017/11/22/7Exploit · Mailing List · Third Party Advisory
→
https://doc.pfsense.org/index.php/2.4.2_New_Features_and_ChangesIssue Tracking · Vendor Advisory
→
https://github.com/opnsense/core/commit/d218b225Patch · Third Party Advisory
→
https://github.com/pfsense/pfsense/commit/386d89b07Patch · Third Party Advisory
→
https://www.netgate.com/blog/pfsense-2-4-2-release-p1-and-2-3-5-release-p1-now-available.htmlThird Party Advisory
→
https://www.securify.nl/en/advisory/SFY20171101/clickjacking-vulnerability-in-csrf-error-page-pfsense.htmlExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2017-1000479
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-352
CISA KEVNo
Affected2 vendor(s)
PublishedJan 3, 2018

Related CVEs (CWE-352)

CVE-2017-5145
10.0
CVE-2025-32642
10.0
CVE-2025-23922
10.0
CVE-2019-14551
9.8
CVE-2017-6080
9.8
CVE-2017-5959
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-1000479 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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