CVE-2011-4197
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.92%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 1.92% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- pfsense/pfsense
- Source
- cve@mitre.org
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html
- http://secunia.com/advisories/46780Vendor Advisory
- http://www.osvdb.org/77982
- http://www.securityfocus.com/bid/51169
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71969
- https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e
- https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894
- https://www.trustmatta.com/advisories/MATTA-2011-001.txt
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html
- http://secunia.com/advisories/46780Vendor Advisory
- http://www.osvdb.org/77982
- http://www.securityfocus.com/bid/51169
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71969
- https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e
- https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894
- https://www.trustmatta.com/advisories/MATTA-2011-001.txt
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.