(
diff)
← Older revision | Approved revision (diff) | Latest revision (diff) | Newer revision → (diff)
| Kidde Smart Smoke & CO Alarm (KD2K-SM2)
|
|
Security Grade
Calculator v1
|
Kidde Smart Smoke & CO Alarm
Category: Sensor • Model / Gen: KD2K-SM2
Release Date: 2022-03-08 • Status: In sale
|
Security Evaluation
1. Device Security
| Criterion
|
Value
|
Proof
|
Comment
|
| Known hardware tampering
|
None
|
—
|
|
| Known vulnerabilities
|
Very common
|
🔗 Proof
|
|
| Prior attacks
|
Rare
|
🔗 Proof
|
|
| Updatability
|
None
|
—
|
|
| Category Score
|
Score: 3 / 3
|
2. System Security
| Criterion
|
Value
|
Proof
|
Comment
|
| Authentication with other systems
|
Partial
|
—
|
|
| Communications
|
Encrypted with obselete encryption
|
—
|
|
| Storage
|
No encryption
|
—
|
|
| Category Score
|
Score: 3 / 3
|
3. User Authentication
| Criterion
|
Value
|
Proof
|
Comment
|
| Account management
|
Basic
|
—
|
|
| Authentication
|
Basic
|
🔗 Proof
|
|
| Brute-force protection
|
Absent
|
—
|
|
| Event logging
|
Partial logging
|
—
|
|
| Passwords
|
Default/Common/Easy to guess
|
—
|
|
| Category Score
|
Score: 3 / 3
|
Technical Specifications
| Property
|
Details
|
| Operating System & App
|
RTOS (Companion App: )
|
| Hardware (CPU / GPU)
|
CPU: ARM Cortex-M4 • GPU: None
|
| Memory & Storage
|
Memory: 64 KB RAM • Storage: 512 KB Flash
|
| Power, Battery & Charging
|
Battery: AA batteries x 3 • Power: Battery powered • Charging:
|
| Display & Camera
|
Display: LED status light • Camera: None
|
| Sound & Connectivity
|
Sound: • Connectivity: 2.4GHz Wi-Fi, Z-Wave
|
| Physical (Dimensions & Mass)
|
Dimensions: None • Mass: None
|
CVE-2024-23738 is a command injection flaw in the Kidde Smart smoke and carbon monoxide alarms (CVSS 9.8, Critical). An attacker on the local network can send a crafted command to the device, which causes a denial-of-service condition and may allow code execution. If the alarm is disabled by an attacker, it no longer warns the residents about smoke or carbon monoxide, which creates a direct physical safety risk. The device receives firmware updates rarely, so the exposure lasts a long time.
