CVE-2011-4197
First published: Tue Jan 03 2012(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pfSense pfSense | <=2.0 | |
| pfSense pfSense | =1.0.x | |
| pfSense pfSense | =1.2.1 | |
| pfSense pfSense | =1.2.2 | |
| pfSense pfSense | =1.2.3 |
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Reference Links
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html
- http://secunia.com/advisories/46780
- 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
Frequently Asked Questions
What is the severity of CVE-2011-4197?
CVE-2011-4197 has a high severity rating due to the potential for remote attackers to create sub-certificates.
How do I fix CVE-2011-4197?
To fix CVE-2011-4197, upgrade pfSense to version 2.0.1 or later.
What versions of pfSense are affected by CVE-2011-4197?
CVE-2011-4197 affects pfSense versions prior to 2.0.1, including 1.0.x, 1.2.1, 1.2.2, and 1.2.3.
What does CVE-2011-4197 exploit?
CVE-2011-4197 exploits the incorrect handling of CA basic constraints in X.509 certificates.
Can CVE-2011-4197 be exploited without authentication?
Yes, CVE-2011-4197 can be exploited by remote attackers without requiring authentication.
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- collector/mitre-cve
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- agent/last-modified-date
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- vendor/pfsense
- canonical/pfsense pfsense
- version/pfsense pfsense/2.0
- version/pfsense pfsense/1.0.x
- version/pfsense pfsense/1.2.1
- version/pfsense pfsense/1.2.2
- version/pfsense pfsense/1.2.3