Listen to this Post
How the mentioned CVE works:
A CORS misconfiguration in Strapi’s core improperly reflects the `Origin` header value from incoming requests directly into the `Access-Control-Allow-Origin` response header without validation. When the `Access-Control-Allow-Credentials` flag is also set to true, this allows any attacker-controlled website, even one running on a different port of the same domain (like http://localhost:8888`), to make credentialed cross-origin requests to a vulnerable Strapi instance (typically on port1337). This misconfiguration effectively bypasses the Same-Origin Policy, permitting the malicious site to read sensitive data from the Strapi backend by sending the user's session cookies with each request.curl -H “Origin: http://malicious.site” -I http://strapi-host:1337/api/users`
Platform: Strapi
Version: (pre-patch versions)
Vulnerability: CORS Misconfiguration
Severity: Moderate
<h2 style="color: blue;">date: 2024-10-16</h2>
<h2 style="color: blue;">Prediction: 2024-10-30</h2>
<h2 style="color: blue;">What Undercode Say:</h2>
Access-Control-Allow-Origin: http://malicious.site`Access-Control-Allow-Credentials: true`
<h2 style="color: blue;">
How Exploit:
Attacker lures user to malicious site. Site script sends credentialed request to Strapi. Strapi reflects malicious origin in CORS header. Attacker’s site reads sensitive API responses.
Protection from this CVE:
Apply vendor patch. Implement strict CORS origin whitelisting. Do not use wildcard with credentials.
Impact:
Sensitive data exposure. Unauthorized information disclosure.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
