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Security Advisories: GSA_kwCzR0hTQS13eDY5LXJ2ZzMteDdmY80YdQ

XSS via prototype pollution in NodeBB

Impact

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 disclosed at the same time as this report.

Patches

The vulnerability has been patched as of v1.18.5.

Workarounds

Cherry-pick commit hash 1783f918bc19568f421473824461ff2ed7755e4c to receive this patch in lieu of a full upgrade.

For more information

If you have any questions or comments about this advisory:

Permalink: https://github.com/advisories/GHSA-wx69-rvg3-x7fc
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13eDY5LXJ2ZzMteDdmY80YdQ
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: about 1 year ago


CVSS Score: 9.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Identifiers: GHSA-wx69-rvg3-x7fc, CVE-2021-43787
References: Repository: https://github.com/NodeBB/NodeBB

Affected Packages

npm:nodebb
Dependent packages: 1
Dependent repositories: 3
Downloads: 288 last month
Affected Version Ranges: >= 1.15.0, < 1.18.5
Fixed in: 1.18.5
All affected versions:
All unaffected versions: 0.4.3, 0.6.1, 0.7.0, 0.8.2, 1.4.0