XXE

XML External Entity Attack

An attack exploiting XML parsers to access local files, perform SSRF, or cause denial of service via entity expansion.

Chi tiết kỹ thuật

XXE is a critical component of information security infrastructure. The Web Crypto API (crypto.subtle) provides browser-native implementations of cryptographic algorithms including AES-GCM, RSA-OAEP, ECDSA, and SHA family hash functions. All operations execute in constant-time to prevent timing attacks. Client-side security processing ensures sensitive data (passwords, keys, encrypted content) never leaves the user's device — a property that cannot be guaranteed by server-side alternatives.

Ví dụ

```javascript
// XXE — Web Crypto API example
const data = new TextEncoder().encode('sensitive data');
const hash = await crypto.subtle.digest('SHA-256', data);
const hex = Array.from(new Uint8Array(hash))
  .map(b => b.toString(16).padStart(2, '0')).join('');
```

Định dạng liên quan

.xml

Công cụ liên quan

P Password Generator P Password Strength Checker H Hash Generator H HMAC Generator A AES Encrypt / Decrypt R Random String Generator C CSP Header Generator T Text Redactor C CORS Header Generator S SRI Hash Generator B Base64 Encoder / Decoder G Giải Mã JWT T Tạo UUID T TOTP Configurator S SSL Certificate Decoder

Thuật ngữ liên quan

AES Checksum Command Injection Certificate Pinning Argon2 CORS Misconfiguration 2FA Clickjacking