Domain History

remui.elearning.uni-obuda.hu

Grade A · 82/100 · 6/7 security headers present

Security Score

82/ 100

Security Headers

6/ 7

CSP Violations

NoViolations

Issues Found

9Issues

Recommendations

8Available

Security

82 / 100

Good security foundation but some CSP hardening recommended.

Compliance

70 / 100

Mostly compliant but some directives or headers are missing.

Best Practices

40 / 100

Few best practices adopted — significant room for improvement.

CSP Analysis

Content Security PolicyHIGH

frame-ancestors 'self'; base-uri 'self'; object-src 'self' https:; upgrade-insecure-requests

Directive Analysis

frame-ancestorsLOW

self

base-uriLOW

self

object-srcHIGH

self https:

•CRITICAL: 'https:' in object-src allows scripts from ANY HTTPS domain

upgrade-insecure-requestsLOW

Missing Directives

⚠CRITICALMissing CRITICAL directive default-src (Base fallback directive)

⚠CRITICALMissing CRITICAL directive script-src (JavaScript source control)

⚠MEDIUMMissing MEDIUM directive form-action (Form submission control - prevents form hijacking)

⚠MEDIUMMissing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)

⚠MEDIUMMissing MEDIUM directive style-src (Stylesheet source control)

⚠MEDIUMMissing MEDIUM directive img-src (Image source control)

⚠MEDIUMMissing MEDIUM directive font-src (Font source control)

Security Headers

✗Cross-Origin-Opener-PolicyMissing

Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.

How to add it:

nginx

add_header Cross-Origin-Opener-Policy "same-origin" always;

apache

Header always set Cross-Origin-Opener-Policy "same-origin"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Cross-Origin-Opener-Policy to "same-origin"

✓Permissions-PolicyPresent

usb=(), serial=(), hid=(), bluetooth=(), idle-detection=(), browsing-topics=(), local-fonts=(), window-management=(), otp-credentials=(), ambient-light-sensor=()

Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.

✓Referrer-PolicyPresent

strict-origin-when-cross-origin

Controls how much referrer information is sent with requests, preventing data leaks to third parties.

✓Strict-Transport-SecurityPresent

max-age=63072000; preload

Forces browsers to use HTTPS for all future requests, preventing man-in-the-middle attacks and SSL stripping.

✓X-Content-Type-OptionsPresent

nosniff

Prevents browsers from MIME-sniffing responses away from the declared Content-Type, blocking drive-by downloads.

✓X-Frame-OptionsPresent

SAMEORIGIN

Prevents the page from being embedded in iframes, protecting against clickjacking attacks.

✓X-XSS-ProtectionPresent

Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.

1 recommended security header is missing on remui.elearning.uni-obuda.hu.

Issues Found

•CRITICAL: 'https:' in object-src allows scripts from ANY HTTPS domaincritical
•Missing CRITICAL directive default-src (Base fallback directive)critical
•Missing CRITICAL directive script-src (JavaScript source control)critical
•Missing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)medium
•Missing MEDIUM directive font-src (Font source control)medium
•Missing MEDIUM directive form-action (Form submission control - prevents form hijacking)medium
•Missing MEDIUM directive img-src (Image source control)medium
•Missing MEDIUM directive style-src (Stylesheet source control)medium
•Missing security header: Cross-Origin-Opener-Policymedium

Recommendations

→Add connect-src directive with appropriate restrictions
→Add default-src directive with appropriate restrictions
→Add font-src directive with appropriate restrictions
→Add form-action directive with appropriate restrictions
→Add img-src directive with appropriate restrictions
→Add script-src directive with appropriate restrictions
→Add style-src directive with appropriate restrictions
→Consider implementing a stricter Content Security Policy

Beyond headers: infrastructure exposure

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