CVE-2011-3872: puppet Improper Input Validation
Vulnerability summary
CVE-2011-3872 is a low (CVSS 2.6) Improper Input Validation vulnerability in puppet. EPSS estimates a 2.50% chance of exploitation in the next 30 days, higher than 84.4% of scored vulnerabilities.
Timeline
- 27-10-2011PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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."
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
2.50%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
+0.05 pp
From 2.45% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Puppet2 products
- puppet2.6.0 | 2.6.1 | 2.6.2 | 2.6.3 | 2.6.4 | 2.6.5 | 2.6.6 | 2.6.7 | 2.6.8 | 2.6.9 | 2.6.10 | 2.6.11 | 2.7.2 | 2.7.3 | 2.7.4 | 2.7.5
- puppet_enterprise1.2.0 | 1.2.1 | 1.2.2 | 1.2.3
Puppetlabs2 products
- puppet2.7.0 | 2.7.1
- puppet_enterprise_users1.0 | 1.1
Debian1 product
- puppet< 2.7.6-1 | < 0.24.5-3+lenny2 | < 2.6.2-5+squeeze3
3 vendors · 5 products
References
12 links- puppetlabs.com/blog/important-security-announcement-altnames-vulnerability/X Refsource CONFIRM
- puppet.com/security/cve/cve-2011-3872X Refsource CONFIRM
- groups.google.com/group/puppet-announce/browse_thread/thread/e7edc3a71348f3e1X Refsource CONFIRMPatch
