Vulnerability CVE-2017-1000479
Published: 2018-01-03

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.

Type:

CWE-352

 (Cross-Site Request Forgery (CSRF))

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Pfsense -> Pfsense 
Netgate -> Pfsense 

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