CVE-2012-3867

Exp

lib/puppet/ssl/certificate_authority.rb in Puppet before 2.6.17 and 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, does not properly restrict the characters in the Common Name field of a Certificate Signing Request (CSR), which makes it easier for user-assisted remote attackers to trick administrators into signing a crafted agent certificate via ANSI control sequences.

Published: 2012-08-06 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3867 is rated Exploit Available (59.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.42%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2012-3867

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-3867

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-06-05 1.58% 1.42% -0.17%
2 2025-03-30 3.94% 1.58% -2.35%
3 2025-03-29 — 3.94% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3867

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2012-3867

GitHub Security Advisory for CVE-2012-3867

GHSA-q44r-f2hm-v76v · Severity: medium · Ecosystem: rubygems — Pupper does not properly restrict characters in Common Name field of Certificate Signing Request

OS Trackers for CVE-2012-3867

vendor priority summary link
debian not yet assigned CVE-2012-3867 not yet assigned priority: Debian including 1 source packages (puppet), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2012-3867
redhat low — https://access.redhat.com/security/cve/CVE-2012-3867
ubuntu medium CVE-2012-3867 medium priority: Ubuntu including 1 source packages (puppet), 6 status rows across 6 suites (hardy, lucid, natty, oneiric, precise, upstream): released 5, ignored 1. https://ubuntu.com/security/CVE-2012-3867

Affected software / configurations for CVE-2012-3867

Vendor Product Version Raw CPE
puppet puppet 2.6.0 cpe:2.3:a:puppet:puppet:2.6.0:*:*:*:*:*:*:*
puppet puppet 2.6.1 cpe:2.3:a:puppet:puppet:2.6.1:*:*:*:*:*:*:*
puppet puppet 2.6.2 cpe:2.3:a:puppet:puppet:2.6.2:*:*:*:*:*:*:*
puppet puppet 2.6.3 cpe:2.3:a:puppet:puppet:2.6.3:*:*:*:*:*:*:*
puppet puppet 2.6.4 cpe:2.3:a:puppet:puppet:2.6.4:*:*:*:*:*:*:*
puppet puppet 2.6.5 cpe:2.3:a:puppet:puppet:2.6.5:*:*:*:*:*:*:*
puppet puppet 2.6.6 cpe:2.3:a:puppet:puppet:2.6.6:*:*:*:*:*:*:*
puppet puppet 2.6.7 cpe:2.3:a:puppet:puppet:2.6.7:*:*:*:*:*:*:*
puppet puppet 2.6.8 cpe:2.3:a:puppet:puppet:2.6.8:*:*:*:*:*:*:*
puppet puppet 2.6.9 cpe:2.3:a:puppet:puppet:2.6.9:*:*:*:*:*:*:*
puppet puppet 2.6.10 cpe:2.3:a:puppet:puppet:2.6.10:*:*:*:*:*:*:*
puppet puppet 2.6.11 cpe:2.3:a:puppet:puppet:2.6.11:*:*:*:*:*:*:*
puppet puppet 2.6.12 cpe:2.3:a:puppet:puppet:2.6.12:*:*:*:*:*:*:*
puppet puppet 2.6.13 cpe:2.3:a:puppet:puppet:2.6.13:*:*:*:*:*:*:*
puppet puppet 2.6.14 cpe:2.3:a:puppet:puppet:2.6.14:*:*:*:*:*:*:*
puppet puppet 2.6.15 cpe:2.3:a:puppet:puppet:2.6.15:*:*:*:*:*:*:*
puppet puppet 2.7.2 cpe:2.3:a:puppet:puppet:2.7.2:*:*:*:*:*:*:*
puppet puppet 2.7.3 cpe:2.3:a:puppet:puppet:2.7.3:*:*:*:*:*:*:*
puppet puppet 2.7.4 cpe:2.3:a:puppet:puppet:2.7.4:*:*:*:*:*:*:*
puppet puppet 2.7.5 cpe:2.3:a:puppet:puppet:2.7.5:*:*:*:*:*:*:*
puppet puppet 2.7.6 cpe:2.3:a:puppet:puppet:2.7.6:*:*:*:*:*:*:*
puppet puppet 2.7.7 cpe:2.3:a:puppet:puppet:2.7.7:*:*:*:*:*:*:*
puppet puppet 2.7.8 cpe:2.3:a:puppet:puppet:2.7.8:*:*:*:*:*:*:*
puppet puppet 2.7.9 cpe:2.3:a:puppet:puppet:2.7.9:*:*:*:*:*:*:*
puppet puppet 2.7.10 cpe:2.3:a:puppet:puppet:2.7.10:*:*:*:*:*:*:*
puppet puppet 2.7.11 cpe:2.3:a:puppet:puppet:2.7.11:*:*:*:*:*:*:*
puppet puppet 2.7.12 cpe:2.3:a:puppet:puppet:2.7.12:*:*:*:*:*:*:*
puppet puppet 2.7.13 cpe:2.3:a:puppet:puppet:2.7.13:*:*:*:*:*:*:*
puppet puppet 2.7.14 cpe:2.3:a:puppet:puppet:2.7.14:*:*:*:*:*:*:*
puppet puppet 2.7.16 cpe:2.3:a:puppet:puppet:2.7.16:*:*:*:*:*:*:*
puppet puppet 2.7.17 cpe:2.3:a:puppet:puppet:2.7.17:*:*:*:*:*:*:*
puppetlabs puppet <= 2.6.16 cpe:2.3:a:puppetlabs:puppet:*:*:*:*:*:*:*:*
puppetlabs puppet 2.7.0 cpe:2.3:a:puppetlabs:puppet:2.7.0:*:*:*:*:*:*:*
puppetlabs puppet 2.7.1 cpe:2.3:a:puppetlabs:puppet:2.7.1:*:*:*:*:*:*:*
debian debian_linux 6.0 cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 11.04 cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
canonical ubuntu_linux 11.10 cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
opensuse opensuse 11.4 cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
opensuse opensuse 12.1 cpe:2.3:o:opensuse:opensuse:12.1:*:*:*:*:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp1:*:*:*:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp2:*:*:*:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:*:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:*:vmware:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:*:*:*
puppet puppet_enterprise <= 2.5.1 cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*

References for CVE-2012-3867

cvelogic Threat Intelligence