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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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."
Timeline
ID reserved
By mitre
- 28 days later
· 28 days later
Published
- 13 years later
· 13 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
n/a
- affected n/a
References (11)
- 46550 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-1238-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://puppetlabs.com/blog/important-security-announcement-altnames-vulnerability/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- puppet-x509-spoofing(70970) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 46578 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://puppet.com/security/cve/cve-2011-3872 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 46934 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://groups.google.com/group/puppet-announce/browse_thread/thread/e7edc3a71348f3e1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 50356 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 46964 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-1238-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-3872)Record last updated .