Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWMzbTgteDNjZy1xbTJj

Configuration Override in helmet-csp

Versions of helmet-csp before to 2.9.1 are vulnerable to a Configuration Override affecting the application's Content Security Policy (CSP). The package's browser sniffing for Firefox deletes the default-src CSP policy, which is the fallback policy. This allows an attacker to remove an application's default CSP, possibly rendering the application vulnerable to Cross-Site Scripting.

Recommendation

Upgrade to version 2.9.1 or later. Setting the browserSniff configuration to false in vulnerable versions also mitigates the issue.

Permalink: https://github.com/advisories/GHSA-c3m8-x3cg-qm2c
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWMzbTgteDNjZy1xbTJj
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 3 years ago
Updated: 9 months ago

CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Identifiers: GHSA-c3m8-x3cg-qm2c
References:

• https://www.npmjs.com/advisories/1176
• https://github.com/helmetjs/csp/commit/67a69baafa8198a154f0505a0cf0875f76f6186a
• https://snyk.io/vuln/SNYK-JS-HELMETCSP-469436
• https://github.com/advisories/GHSA-c3m8-x3cg-qm2c

Affected Packages