PT-2021-23933 · Nodebb · Nodebb

Julianlamp · Published 2021-11-29 · Updated 2022-10-27 · CVE-2021-43787

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Critical

Base vector

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

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

Description: A prototype pollution vulnerability in the uploader module allowed a malicious user to inject arbitrary data (i.e. javascript) into the DOM, theoretically allowing for an account takeover when used in conjunction with a path traversal vulnerability.

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 1783f918bc19568f421473824461ff2ed7755e4c to receive this patch in lieu of a full upgrade.

Exploit

Fix

Prototype Pollution

XSS

Weakness Enumeration

CWE-1321

CWE-79

Related Identifiers

CVE-2021-43787

GHSA-WX69-RVG3-X7FC

Affected Products

Nodebb

References · 9

• 🔥 https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot · Exploit
• https://github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc · Patch
• https://github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c · Patch
• https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5 · Patch
• https://osv.dev/vulnerability/CVE-2021-43787 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-wx69-rvg3-x7fc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43787 · Security Note
• https://github.com/NodeBB/NodeBB · Note
• https://t.me/cibsecurity/33054 · Telegram Post