Ecosyste.ms: Advisories

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:

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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: about 3 years ago
Updated: almost 2 years 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

EPSS Percentage: 0.00125
EPSS Percentile: 0.47515

Identifiers: GHSA-wx69-rvg3-x7fc, CVE-2021-43787
References:

• https://github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc
• https://nvd.nist.gov/vuln/detail/CVE-2021-43787
• https://github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c
• https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5
• https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/
• https://github.com/advisories/GHSA-wx69-rvg3-x7fc

Repository: https://github.com/NodeBB/NodeBB
Blast Radius: 4.3

Affected Packages