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CVE-2011-3872

2.6 · LOW

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 t…

Published Oct 27, 2011puppetCWE-20EPSS 2.50%

Overview

CVE-2011-3872 is a low-severity vulnerability affecting puppet puppet. It was published on October 27, 2011 and has a CVSS 2.0 base score of 2.6 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories and patches from puppet. Update puppet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refgroups.google.com/group/puppet-announce/browse_thread/thread/e7edc3a71348f3e1Refpuppetlabs.com/blog/important-security-announcement-altnames-vulnerability/Refsecunia.com/advisories/46550Refsecunia.com/advisories/46578Refsecunia.com/advisories/46934Refsecunia.com/advisories/46964Refwww.securityfocus.com/bid/50356Refwww.ubuntu.com/usn/USN-1238-1Refwww.ubuntu.com/usn/USN-1238-2Refexchange.xforce.ibmcloud.com/vulnerabilities/70970

How CyberStrike helps

Frequently asked questions

What is CVE-2011-3872?

CVE-2011-3872 is a low-severity vulnerability affecting puppet puppet. It was published on October 27, 2011 and has a CVSS 2.0 base score of 2.6 (LOW).

How severe is CVE-2011-3872?

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-3872?

Check the references section for vendor advisories and patches from puppet. Update puppet to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-3872?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-3872 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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