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kindspells/astro-shield · Security

Content-Security-Policy header generation in middleware could be compromised by malicious injections

GHSA ID
GHSA-w387-5qqw-7g8m
CVE ID
CVE-2024-29896
Severity
high
Published
Updated
CVSS
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v3
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Description

Impact

When the following conditions are met:

  • Automated CSP headers generation for SSR content is enabled
  • The web application serves content that can be partially controlled by external users

Then it is possible that the CSP headers generation feature might be "allow-listing" malicious injected resources like inlined JS, or references to external malicious scripts.

Patches

Available in version 1.3.0 .

Workarounds

  • Do not enable CSP headers generation.
  • Use it only for dynamically generated content that cannot be controlled by external users in any way.

References

Are there any links users can visit to find out more?

CWEs

  • CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

References

Open GitHub