CVE-2012-3867: Puppet Pupper Does Not Properly Restrict Vulnerability

MODERATE
Advisory Identifier: GHSA-q44r-f2hm-v76v
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Advisory Summary

CVE-2012-3867 is a MODERATE pupper does not properly restrict vulnerability (General Security Weakness) affecting Puppet libraries in the RubyGems ecosystem. The issue involves pupper does not properly restrict characters in common name field of certificate signing request. Remediation is available by upgrading affected packages to version 2.6.17, 2.7.18.

CVE-2012-3867 at a Glance

CVE Identifier CVE-2012-3867
GHSA Identifier GHSA-q44r-f2hm-v76v
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Puppet
Package Ecosystem RubyGems
Published Date
Last Updated

How to Fix CVE-2012-3867

To remediate this vulnerability, upgrade all affected Puppet dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

puppet fixed: 2.6.17 
Upgrade puppet to 2.6.17
puppet fixed: 2.7.18 
Upgrade puppet to 2.7.18
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for puppet

How to Check if You Are Affected

To determine whether your application is affected by CVE-2012-3867, inspect your project dependencies for Puppet:

inspect dependencies for puppet

Analyze the terminal output to locate any version of Puppet in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.17), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Puppet, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

`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.

CVE-2012-3867 Affected Puppet Versions

2 component(s)
Fixed Versions:
2.6.172.7.18
Product / Package Ecosystem Affected Versions Fixed Version
puppet
gem/puppet
RubyGems
< 2.6.17
2.6.17
puppet
gem/puppet
RubyGems
≥ 2.7.0
< 2.7.18
2.7.18

References

NVD — CVE-2012-3867 NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-3867
Security Fix Commit FIX COMMIT
https://github.com/puppetlabs/puppet/commit/dfedaa5fa841ccf335245a748b347b7c7c236640
Security Fix Commit FIX COMMIT
https://github.com/puppetlabs/puppet/commit/f3419620b42080dad3b0be14470b20a972f13c50
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=839158
Puppet Source Repository REPOSITORY
https://github.com/puppetlabs/puppet
Puppet Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puppet/CVE-2012-3867.yml
Puppet Security Information SECURITY
https://www.puppet.com/security/cve/cve-2012-3867-insufficient-input-validation
Puppet Security Information SECURITY
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00006.html
lists.opensuse.org/opensuse-updates/20... WEB
http://lists.opensuse.org/opensuse-updates/2012-07/msg00036.html
Puppet Security Information SECURITY
http://puppetlabs.com/security/cve/cve-2012-3867
Puppet Security Information SECURITY
http://www.debian.org/security/2012/dsa-2511
www.ubuntu.com/usn/usn-1506-1 WEB
http://www.ubuntu.com/usn/USN-1506-1

Frequently Asked Questions

What is CVE-2012-3867?
CVE-2012-3867 is a security vulnerability in Puppet involving Pupper does not properly restrict characters in Common Name field of Certificate Signing Request under General Security Weakness.
Which Puppet versions are affected?
Affected versions include releases prior to 2.6.17, 2.7.18 across affected packages: puppet.
What version fixes CVE-2012-3867?
Upgrading to 2.6.17, 2.7.18 (or the latest patched release for your respective branch) resolves the vulnerability.
Is puppet affected?
Yes, puppet is affected in releases prior to 2.6.17, 2.7.18. Upgrade your dependency to 2.6.17, 2.7.18 or later.
What CWE is associated with CVE-2012-3867?
CVE-2012-3867 is classified under General Security Weakness.
How can I check RubyGems dependencies for CVE-2012-3867?
Run the dependency tree command: 'inspect dependencies for puppet'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q44r-f2hm-v76v",
  "modified" : "2023-05-12T17:21:34Z",
  "published" : "2017-10-24T18:33:37Z",
  "aliases" : [ "CVE-2012-3867" ],
  "summary" : "Pupper does not properly restrict characters in Common Name field of Certificate Signing Request",
  "details" : "`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.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "puppet"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.17"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "puppet"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.7.0"
      }, {
        "fixed" : "2.7.18"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2012-3867"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/puppetlabs/puppet/commit/dfedaa5fa841ccf335245a748b347b7c7c236640"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/puppetlabs/puppet/commit/f3419620b42080dad3b0be14470b20a972f13c50"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=839158"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/puppetlabs/puppet"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puppet/CVE-2012-3867.yml"
  }, {
    "type" : "WEB",
    "url" : "https://www.puppet.com/security/cve/cve-2012-3867-insufficient-input-validation"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00006.html"
  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-updates/2012-07/msg00036.html"
  }, {
    "type" : "WEB",
    "url" : "http://puppetlabs.com/security/cve/cve-2012-3867"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2012/dsa-2511"
  }, {
    "type" : "WEB",
    "url" : "http://www.ubuntu.com/usn/USN-1506-1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:50:50Z",
    "nvd_published_at" : null
  }
}