CVE-2021-21431 Information

Description

sopel-channelmgnt is a channelmgnt plugin for sopel. In versions prior to 2.0.1 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. This is fixed in version 2.0.1. As a workaround do not use this plugin on networks where TARGMAX > 1.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H

Reference

https://github.com/MirahezeBots/sopel-channelmgnt/security/advisories/GHSA-23c7-6444-399m https://pypi.org/project/sopel-plugins.channelmgnt/ https://github.com/MirahezeBots/sopel-channelmgnt/commit/7c96d400358221e59135f0a0be0744f3fad73856

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1