CVE-2011-3872

Description

Puppet 2.6.x before 2.6.12 and 2.7.x before 2.7.6, and Puppet Enterprise (PE) Users 1.0, 1.1, and 1.2 before 1.2.4, when signing an agent certificate, adds the Puppet master's certdnsnames values to the X.509 Subject Alternative Name field of the certificate, which allows remote attackers to spoof a Puppet master via a man-in-the-middle (MITM) attack against an agent that uses an alternate DNS name for the master, aka "AltNames Vulnerability."

Category

2.6
CVSS
Severity: Low
CVSS 2.0 •
EPSS 2.78% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/46550 third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-1238-2 vendor advisory
http://puppetlabs.com/blog/important-security-announcement-altnames-vulnerability/
https://exchange.xforce.ibmcloud.com/vulnerabilities/70970 vdb entry
http://secunia.com/advisories/46578 third party advisory vendor advisory
https://puppet.com/security/cve/cve-2011-3872
http://secunia.com/advisories/46934 third party advisory
http://groups.google.com/group/puppet-announce/browse_thread/thread/e7edc3a71348f3e1 patch
http://www.securityfocus.com/bid/50356 vdb entry
http://secunia.com/advisories/46964 third party advisory
http://www.ubuntu.com/usn/USN-1238-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2011-3872?
CVE-2011-3872 has been scored as a low severity vulnerability.
How to fix CVE-2011-3872?
To fix CVE-2011-3872, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-3872 being actively exploited in the wild?
It is possible that CVE-2011-3872 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.