PT-2021-23932 · Nodebb · Nodebb

Julianlam · Published 2021-11-29 · Updated 2022-10-27 · CVE-2021-43786

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Nodebb versions prior to 1.18.5

Description: The issue is related to incorrect logic in the token verification step, which unintentionally allowed master token access to the API.

Recommendations: For versions prior to 1.18.5, upgrade to version 1.18.5 or later as soon as possible. As a temporary workaround, consider cherry-picking commit hash 04dab1d550cdebf4c1567bca9a51f8b9ca48a500 to receive the patch in lieu of a full upgrade.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-43786

GHSA-HF2M-J98R-4FQW

Affected Products

Nodebb

References · 9

• 🔥 https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot · Exploit
• https://github.com/NodeBB/NodeBB/commit/04dab1d550cdebf4c1567bca9a51f8b9ca48a500 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-43786 · Security Note
• https://osv.dev/vulnerability/GHSA-hf2m-j98r-4fqw · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43786 · Vendor Advisory
• https://github.com/NodeBB/NodeBB/security/advisories/GHSA-hf2m-j98r-4fqw · Note
• https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5 · Note
• https://github.com/NodeBB/NodeBB · Note
• https://t.me/cibsecurity/33064 · Telegram Post