CVE-2014-3251: The MCollective aes_security plugin, as used in Puppet Enterprise before 3.3.0 and Mcollective before 2.5.3, d

Q: How do I fix CVE-2014-3251?

puppet enterprise: upgrade to newer than 3.2.0; mcollective: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2014-3251 being exploited?

CVE-2014-3251 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-3251 affect?

CVE-2014-3251 affects puppet enterprise, mcollective. Severity is medium (CVSS 4.4). The MCollective aes_security plugin, as used in Puppet Enterprise before 3.3.0 and Mcollective before 2.5.3, does not properly validate new server certificates based on the CA certificate, which allows local users to establish unauthorized

Q: How urgent is CVE-2014-3251?

Priority 17/100. No elevated risk signals yet.

Routine

MEDIUM 4.4UPGRADEMITIGATE

CVE-2014-3251 is a medium-severity flaw (CVSS 4.4) affecting puppet enterprise, mcollective. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The MCollective aes_security plugin, as used in Puppet Enterprise before 3.3.0 and Mcollective before 2.5.3, does not properly validate new server certificates based on the CA certificate, which allows local users to establish unauthorized Mcollective connections via unspecified vectors related to a race condition.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.4 (Medium)
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-362
Published	2014-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: puppet · puppetlabs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-08-12 23:55 UTCPublished CVE record published
2026-06-17 00:07 UTCUpdated Record last modified

puppet puppet enterprise UPGRADE

Affected: <= 3.2.0

Fixed in: newer than 3.2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy puppet-enterprise || rpm -q puppet-enterprise || puppet-enterprise --version

2. UPGRADE to newer than 3.2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade puppet-enterprise

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade puppet-enterprise

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

puppetlabs mcollective MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mcollective || rpm -q mcollective || mcollective --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2014-3251?

puppet enterprise: upgrade to newer than 3.2.0; mcollective: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-3251 being exploited?

CVE-2014-3251 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2014-3251 affect?

CVE-2014-3251 affects puppet enterprise, mcollective. Severity is medium (CVSS 4.4). The MCollective aes_security plugin, as used in Puppet Enterprise before 3.3.0 and Mcollective before 2.5.3, does not properly validate new server certificates based on the CA certificate, which allows local users to establish unauthorized

How urgent is CVE-2014-3251?

Priority 17/100. No elevated risk signals yet.

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References

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