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.
Published 2021-04-09 16:15:12
Updated 2022-10-24 20:26:35
Source GitHub, Inc.
View at NVD,   CVE.org
Vulnerability category: Input validationBypassGain privilege

Products affected by CVE-2021-21431

Exploit prediction scoring system (EPSS) score for CVE-2021-21431

0.09%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21431

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.5
MEDIUM AV:N/AC:L/Au:S/C:N/I:P/A:P
8.0
4.9
NIST
8.1
HIGH CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H
1.7
5.8
NIST
7.6
HIGH CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H
1.2
5.8
GitHub, Inc.

CWE ids for CVE-2021-21431

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: security-advisories@github.com (Secondary)
  • The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
    Assigned by: security-advisories@github.com (Secondary)

References for CVE-2021-21431

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