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CVE-2011-3872

UnknownEPSS 2.43%

Last modified

CVE-2011-3872 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 2.43% chance of exploitation in the next 30 days.

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."

Metrics

EPSS Probability
2.43%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PuppetPuppet2.6.0
PuppetPuppet2.6.1
PuppetPuppet2.6.2
PuppetPuppet2.6.3
PuppetPuppet2.6.4
PuppetPuppet2.6.5
PuppetPuppet2.6.6
PuppetPuppet2.6.7
PuppetPuppet2.6.8
PuppetPuppet2.6.9
PuppetPuppet2.6.10
PuppetPuppet2.6.11
PuppetPuppet2.7.2
PuppetPuppet2.7.3
PuppetPuppet2.7.4
PuppetPuppet2.7.5
PuppetlabsPuppet2.7.0
PuppetlabsPuppet2.7.1
PuppetPuppet Enterprise1.2.0
PuppetPuppet Enterprise1.2.1
PuppetPuppet Enterprise1.2.2
PuppetPuppet Enterprise1.2.3
PuppetlabsPuppet Enterprise Users1.0
PuppetlabsPuppet Enterprise Users1.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-3872?
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."
How severe is CVE-2011-3872?
Severity scoring for CVE-2011-3872 is pending analysis. The EPSS model estimates a 2.43% probability of exploitation in the next 30 days.
How do I fix CVE-2011-3872?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST