CVE-2011-4197

critical

Description

etc/inc/certs.inc in the PKI implementation in pfSense before 2.0.1 creates each X.509 certificate with a true value for the CA basic constraint, which allows remote attackers to create sub-certificates for arbitrary subjects by leveraging the private key.

References

https://www.trustmatta.com/advisories/MATTA-2011-001.txt

https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894

https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e

https://exchange.xforce.ibmcloud.com/vulnerabilities/71969

http://www.securityfocus.com/bid/51169

http://www.osvdb.org/77982

http://secunia.com/advisories/46780

http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html

Details

Source: Mitre, NVD

Published: 2012-01-03

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.1

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

Severity: Critical

EPSS

EPSS: 0.00902