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cve[email protected]CVE-2021-21431
HistoryApr 09, 2021 - 4:15 p.m.

CVE-2021-21431

2021-04-0916:15:11
CWE-20
CWE-284
web.nvd.nist.gov
41
5
sopel-channelmgnt
bot removal restrictions
irc servers
vulnerability
cve-2021-21431
network security
nvd

5.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.1%

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.

Affected configurations

Vulners
NVD
Node
mirahezebotschannelmgntRange<2.0.1
VendorProductVersionCPE
mirahezebotschannelmgnt*cpe:2.3:a:mirahezebots:channelmgnt:*:*:*:*:*:*:*:*

CNA Affected

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

Social References

More

5.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:P/A:P

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.1%