CVE-2025-59700 Entrust nShield HSM恢复分区完整性保护缺失漏洞

# CVE-2025-59700 PoC Concept # This is a conceptual PoC demonstrating the vulnerability # Actual exploitation requires physical access and root privileges # Note: This vulnerability requires: # 1. Physical proximity to the target HSM device (AV:P) # 2. Root-level access to the device (PR:H) # 3. Ability to mount/modify the Recovery Partition # Conceptual attack steps: # 1. Gain physical access to the nShield HSM device # 2. Obtain root privileges through other means (not part of this CVE) # 3. Mount the Recovery Partition (typically /dev/mtdblockX or similar) # 4. Modify Recovery Partition contents without integrity checks # 5. Device will boot with modified Recovery Partition on next restart # Example verification command (requires physical access): # cat /proc/mtd | grep recovery # hexdump -C /dev/mtdblockX | head -20 # Since no cryptographic signature verification exists, # modified images will be accepted without validation # Note: This is a LOW severity vulnerability due to: # - Physical access requirement (AV:P) # - Root privilege requirement (PR:H) # - No remote exploitation vector