CVE-2024-30250
📋 TL;DR
CVE-2024-30250 is a security bypass vulnerability in Astro-Shield that allows attackers to inject malicious cross-origin resources by adding valid integrity attributes to bypass allow-lists. This causes the browser to trust injected resources as legitimate due to SubResource Integrity hash validation. Users of Astro-Shield versions 1.2.0 through 1.3.1 are affected.
💻 Affected Systems
- Astro-Shield
📦 What is this software?
Astro Shield by Kindspells
⚠️ Risk & Real-World Impact
Worst Case
Complete website compromise through malicious script injection leading to data theft, session hijacking, or malware distribution to visitors.
Likely Case
Cross-site scripting (XSS) attacks that steal user data, manipulate page content, or redirect users to malicious sites.
If Mitigated
Limited impact if additional security layers like WAFs, strict CSP policies, or network segmentation are in place.
🎯 Exploit Status
Exploitation requires ability to inject code into web pages served by vulnerable Astro-Shield instances.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.2
Vendor Advisory: https://github.com/kindspells/astro-shield/security/advisories/GHSA-c4gr-q97g-ppwc
Restart Required: Yes
Instructions:
1. Update Astro-Shield to version 1.3.2 or later using npm: npm update astro-shield@latest. 2. Restart your Astro application. 3. Verify the update was successful.
🔧 Temporary Workarounds
Temporarily disable Astro-Shield
allRemove or disable the Astro-Shield integration until patching is possible
npm uninstall astro-shield
Implement manual CSP headers
allAdd strict Content-Security-Policy headers manually in your web server configuration
Add 'Content-Security-Policy' header with strict directives to your web server config
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious script injections
- Enable additional security headers and monitoring for anomalous resource loading
🔍 How to Verify
Check if Vulnerable:
Check package.json for astro-shield version: grep '"astro-shield"' package.jsonCheck Version:
npm list astro-shield | grep astro-shieldVerify Fix Applied:
Verify installed version is 1.3.2 or later: npm list astro-shield📡 Detection & Monitoring
Log Indicators:
- Unexpected integrity attribute values in HTML responses
- Cross-origin resource loads from unexpected domains
Network Indicators:
- Script loads with integrity attributes from non-allowlisted domains
- CSP violation reports for script-src directives
SIEM Query:
web.logs | where url contains "astro-shield" | where version matches "1.[2-3].[0-1]"🔗 References
- https://github.com/kindspells/astro-shield/commit/1221019306f501bf5fa9bcfb5a23a2321d34ba0a
- https://github.com/kindspells/astro-shield/commit/5ae8b8ef4f681d3a81431ee7e79d5dec545c6e1f
- https://github.com/kindspells/astro-shield/releases/tag/1.3.2
- https://github.com/kindspells/astro-shield/security/advisories/GHSA-c4gr-q97g-ppwc
- https://github.com/kindspells/astro-shield/commit/1221019306f501bf5fa9bcfb5a23a2321d34ba0a
- https://github.com/kindspells/astro-shield/commit/5ae8b8ef4f681d3a81431ee7e79d5dec545c6e1f
- https://github.com/kindspells/astro-shield/releases/tag/1.3.2
- https://github.com/kindspells/astro-shield/security/advisories/GHSA-c4gr-q97g-ppwc
