Vulnerabilities in pkg:pypi/sopel-plugins.channelmgnt

PACKAGE
Advisory Identifier: GHSA-23c7-6444-399m
Share
Advisory Summary

CVE-2021-21431 is a HIGH (CVSS 7.6) improper input validation vulnerability (CWE-284: Improper Access Control) affecting Sopel plugins.channelmgnt libraries in the PyPI ecosystem. The issue involves improper input validation in sopel-plugins.channelmgnt. Remediation is available by upgrading affected packages to version 2.0.1.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/sopel-plugins.channelmgnt

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/sopel-plugins.channelmgnt. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-23c7-6444-399m CVE-2021-21431 HIGH Improper Input Validation in sopel-plugins.channelmgnt

CVE-2021-21431 at a Glance

CVE Identifier CVE-2021-21431
GHSA Identifier GHSA-23c7-6444-399m
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification CWE-284: Improper Access Control
Affected Product Sopel plugins.channelmgnt
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.6

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

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

How to Fix CVE-2021-21431

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

sopel-plugins.channelmgnt fixed: 2.0.1 
pip install sopel-plugins.channelmgnt>=2.0.1
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 sopel-plugins.channelmgnt

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2021-21431, inspect your installed packages using pip:

pip show sopel-plugins.channelmgnt

Analyze the terminal output to locate any version of Sopel plugins.channelmgnt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.1), your application is affected.

Note: The pip show sopel-plugins.channelmgnt command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Sopel plugins.channelmgnt, 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

### Impact On some IRC servers, restrictions around the removal of the bot using the kick/kickban command could be bypassed when kicking multiple users at once. We also believe it may have been possible to remove users from other channels but due to the wonder that is IRC and following RfCs, We have no POC for that. Freenode is not affected. ### Patches Upgrade to 2.0.1 or higher ### Workarounds Do not use this plugin on networks where TARGMAX > 1. ### For more information If you have any questions or comments about this advisory: * Open an issue on [phab](https://phab.mirahezebots.org/maniphest/task/edit/form/1/). * Email us at [staff(at)mirahezebots(dot)org](mailto:staff@mirahezebots.org)

CVE-2021-21431 Affected Sopel plugins.channelmgnt Versions

1 component(s)
Fixed Versions:
2.0.1
Product / Package Ecosystem Affected Versions Fixed Version
sopel-plugins.channelmgnt
pypi/sopel-plugins.channelmgnt
PyPI
< 2.0.1
2.0.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m
NVD — CVE-2021-21431 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21431
Security Fix Commit FIX COMMIT
https://github.com/MirahezeBots/sopel-channelmgnt/commit/643388365f28c5cc682254ab913c401f0e53260a
Security Fix Commit FIX COMMIT
https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856
Sopel plugins.channelmgnt Source Repository REPOSITORY
https://github.com/MirahezeBots/sopel-channelmgnt
Sopel plugins.channelmgnt Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/sopel-plugins-channelmgnt/PYSEC-2021-58.yaml
pypi.org/project/sopel-plugi... WEB
https://pypi.org/project/sopel-plugins.channelmgnt

Frequently Asked Questions

What is CVE-2021-21431?
CVE-2021-21431 is a security vulnerability in Sopel plugins.channelmgnt involving Improper Input Validation in sopel-plugins.channelmgnt under CWE-284: Improper Access Control.
Which Sopel plugins.channelmgnt versions are affected?
Affected versions include releases prior to 2.0.1 across affected packages: sopel-plugins.channelmgnt.
What version fixes CVE-2021-21431?
Upgrading to 2.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is sopel-plugins.channelmgnt affected?
Yes, sopel-plugins.channelmgnt is affected in releases prior to 2.0.1. Upgrade your dependency to 2.0.1 or later.
What is the CVSS score of CVE-2021-21431?
CVE-2021-21431 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H.
What CWE is associated with CVE-2021-21431?
CVE-2021-21431 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check PyPI dependencies for CVE-2021-21431?
Run the dependency tree command: 'pip show sopel-plugins.channelmgnt'. 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-23c7-6444-399m",
  "modified" : "2024-10-25T21:10:48Z",
  "published" : "2021-04-09T15:42:40Z",
  "aliases" : [ "CVE-2021-21431" ],
  "summary" : "Improper Input Validation in sopel-plugins.channelmgnt",
  "details" : "### Impact\nOn some IRC servers, restrictions around the removal of the bot using the kick/kickban command could be bypassed when kicking multiple users at once.\nWe also believe it may have been possible to remove users from other channels but due to the wonder that is IRC and following RfCs, We have no POC for that.\n\nFreenode is not affected.\n\n### Patches\nUpgrade to 2.0.1 or higher\n\n### Workarounds\nDo not use this plugin on networks where TARGMAX > 1.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue on [phab](https://phab.mirahezebots.org/maniphest/task/edit/form/1/).\n* Email us at [staff(at)mirahezebots(dot)org](mailto:staff@mirahezebots.org)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "sopel-plugins.channelmgnt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-21431"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MirahezeBots/sopel-channelmgnt/commit/643388365f28c5cc682254ab913c401f0e53260a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/MirahezeBots/sopel-channelmgnt"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/sopel-plugins-channelmgnt/PYSEC-2021-58.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://pypi.org/project/sopel-plugins.channelmgnt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-284" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-09T15:42:18Z",
    "nvd_published_at" : "2021-04-09T16:15:00Z"
  }
}