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API token verification can be bypassed in NodeBB

Critical severity GitHub Reviewed Published Nov 27, 2021 in NodeBB/NodeBB • Updated Jan 31, 2023

Package

npm nodebb (npm)

Affected versions

>= 1.15.0, < 1.18.5

Patched versions

1.18.5

Description

Impact

Incorrect logic present in the token verification step unintentionally allowed master token access to the API.

Patches

The vulnerability has been patch as of v1.18.5.

Workarounds

Cherry-pick commit hash 04dab1d550cdebf4c1567bca9a51f8b9ca48a500 to receive this patch in lieu of a full upgrade.

For more information

If you have any questions or comments about this advisory:

References

@julianlam julianlam published to NodeBB/NodeBB Nov 27, 2021
Published by the National Vulnerability Database Nov 29, 2021
Reviewed Nov 30, 2021
Published to the GitHub Advisory Database Nov 30, 2021
Last updated Jan 31, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.166%
(55th percentile)

Weaknesses

CVE ID

CVE-2021-43786

GHSA ID

GHSA-hf2m-j98r-4fqw

Source code

Credits

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