CVE-2021-21431 Improper Input Validation in sopel-plugins.channelmgnt

2021-04-0915:45:15

CWE-284

CWE-20

GitHub_M

www.cve.org

sopel-plugins

input validation

channel management

CVSS3

7.6

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.3

Confidence

High

EPSS

0.001

Percentile

48.0%

JSON

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.

CNA Affected

[
  {
    "product": "sopel-channelmgnt",
    "vendor": "MirahezeBots",
    "versions": [
      {
        "status": "affected",
        "version": "< 2.0.1"
      }
    ]
  }
]