CVE-2012-6661: Zope2 Plone And Zope2 Do Not Vulnerability

HIGH
Advisory Identifier: GHSA-48vv-2pmq-9fvv
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CVSS 7.5
CWE-336
Published
Advisory Summary

CVE-2012-6661 is a HIGH (CVSS 7.5) plone and zope2 do not vulnerability (CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG)) affecting Zope2 libraries in the PyPI ecosystem. The issue involves plone and zope2 do not reseed pseudo-random number generator. Remediation is available by upgrading affected packages to version 2.13.19, 4.2.3, 4.3b1.

CVE-2012-6661 at a Glance

CVE Identifier CVE-2012-6661
GHSA Identifier GHSA-48vv-2pmq-9fvv
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG)
Affected Product Zope2
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2012-6661

To remediate this vulnerability, upgrade all affected Zope2 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Zope2 fixed: 2.13.19 
pip install Zope2>=2.13.19
Plone fixed: 4.2.3 
pip install Plone>=4.2.3
Plone fixed: 4.3b1 
pip install Plone>=4.3b1
Verify Direct and Transitive Dependencies

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

pip show Zope2

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2012-6661, inspect your installed packages using pip:

pip show Zope2

Analyze the terminal output to locate any version of Zope2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.13.19), your application is affected.

Note: The pip show Zope2 command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG), where a pseudo-random number generator (prng) uses the same seed each time the product is initialized. In Zope2, 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

Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors. NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).

CVE-2012-6661 Affected Zope2 Versions

3 component(s)
Fixed Versions:
2.13.194.2.34.3b1
Product / Package Ecosystem Affected Versions Fixed Version
Zope2
pypi/Zope2
PyPI
< 2.13.19
2.13.19
Plone
pypi/Plone
PyPI
≥ 3.2.2
< 4.2.3
4.2.3
Plone
pypi/Plone
PyPI
≥ 4.3a1
< 4.3b1
4.3b1

References

NVD — CVE-2012-6661 NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-6661
bugs.launchpad.net/zope2/+bug/1071067 WEB
https://bugs.launchpad.net/zope2/+bug/1071067
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-48vv-2pmq-9fvv
Zope2 Source Repository REPOSITORY
https://github.com/plone/Products.CMFPlone
Zope2 Source Repository REPOSITORY
https://github.com/plone/Products.CMFPlone/blob/4.2.3/docs/CHANGES.txt
Zope2 Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2014-51.yaml
Zope2 Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/zope2/PYSEC-2014-76.yaml
plone.org/products/plone-hotf... WEB
https://plone.org/products/plone-hotfix/releases/20121124
Zope2 Security Information SECURITY
https://plone.org/products/plone/security/advisories/20121106/24
Zope2 Security Information SECURITY
http://www.openwall.com/lists/oss-security/2012/11/10/1

Frequently Asked Questions

What is CVE-2012-6661?
CVE-2012-6661 is a security vulnerability in Zope2 involving Plone and Zope2 do not reseed pseudo-random number generator under CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG).
Which Zope2 versions are affected?
Affected versions include releases prior to 2.13.19, 4.2.3, 4.3b1 across affected packages: Zope2, Plone.
What version fixes CVE-2012-6661?
Upgrading to 2.13.19, 4.2.3, 4.3b1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Zope2 affected?
Yes, Zope2 is affected in releases prior to 2.13.19. Upgrade your dependency to 2.13.19 or later.
Is Plone affected?
Yes, Plone is affected in releases prior to 4.2.3, 4.3b1. Upgrade your dependency to 4.2.3, 4.3b1 or later.
What is the CVSS score of CVE-2012-6661?
CVE-2012-6661 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2012-6661?
CVE-2012-6661 is classified under CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG) (A Pseudo-Random Number Generator (PRNG) uses the same seed each time the product is initialized.).
How can I check PyPI dependencies for CVE-2012-6661?
Run the dependency tree command: 'pip show Zope2'. 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-48vv-2pmq-9fvv",
  "modified" : "2024-10-09T21:08:59Z",
  "published" : "2018-07-23T19:51:14Z",
  "aliases" : [ "CVE-2012-6661" ],
  "summary" : "Plone and Zope2 do not reseed pseudo-random number generator",
  "details" : "Zope before 2.13.19, as used in Plone before 4.2.3 and 4.3 before beta 1, does not reseed the pseudo-random number generator (PRNG), which makes it easier for remote attackers to guess the value via unspecified vectors.  NOTE: this issue was SPLIT from CVE-2012-5508 due to different vulnerability types (ADT2).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Zope2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.13.19"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Plone"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.2.2"
      }, {
        "fixed" : "4.2.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Plone"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.3a1"
      }, {
        "fixed" : "4.3b1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.3a2"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2012-6661"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/zope2/+bug/1071067"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-48vv-2pmq-9fvv"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/plone/Products.CMFPlone"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/plone/Products.CMFPlone/blob/4.2.3/docs/CHANGES.txt"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2014-51.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/zope2/PYSEC-2014-76.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://plone.org/products/plone-hotfix/releases/20121124"
  }, {
    "type" : "WEB",
    "url" : "https://plone.org/products/plone/security/advisories/20121106/24"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2012/11/10/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-336" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:57:52Z",
    "nvd_published_at" : null
  }
}