CVE-2021-31642
CHIYU IoT Devices - Denial of Service (DoS)
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
5Exploited in Wild
-Decision
Descriptions
A denial of service condition exists after an integer overflow in several IoT devices from CHIYU Technology, including BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC. The vulnerability can be explored by sending an unexpected integer (> 32 bits) on the page parameter that will crash the web portal and making it unavailable until a reboot of the device.
Se presenta una condición de denegación de servicio tras un desbordamiento de enteros en varios dispositivos IoT de CHIYU Technology, incluyendo BIOSENSE, Webpass, y BF-630, BF-631, y SEMAC. La vulnerabilidad puede ser explorada mediante el envío de un entero inesperado (superiores a 32 bits) en el parámetro page que bloqueará el portal web y hará que no esté disponible hasta un reinicio del dispositivo
CHIYU IoT devices suffer from an integer overflow denial of service vulnerability. Affected devices include BIOSENSE, Webpass, and BF-630, BF-631, and SEMAC with firmware versions prior to June 2021.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-04-23 CVE Reserved
- 2021-06-01 CVE Published
- 2021-06-03 First Exploit
- 2024-08-03 CVE Updated
- 2024-12-17 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-190: Integer Overflow or Wraparound
CAPEC
References (6)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.chiyu-tech.com/msg/message-Firmware-update-87.html | 2021-06-08 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Chiyu-tech Search vendor "Chiyu-tech" | Semac S2 Firmware Search vendor "Chiyu-tech" for product "Semac S2 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac S2 Search vendor "Chiyu-tech" for product "Semac S2" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac D1 Firmware Search vendor "Chiyu-tech" for product "Semac D1 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac D1 Search vendor "Chiyu-tech" for product "Semac D1" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac D2 Firmware Search vendor "Chiyu-tech" for product "Semac D2 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac D2 Search vendor "Chiyu-tech" for product "Semac D2" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac D4 Firmware Search vendor "Chiyu-tech" for product "Semac D4 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac D4 Search vendor "Chiyu-tech" for product "Semac D4" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac S3v3 Firmware Search vendor "Chiyu-tech" for product "Semac S3v3 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac S3v3 Search vendor "Chiyu-tech" for product "Semac S3v3" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac D2 N300 Firmware Search vendor "Chiyu-tech" for product "Semac D2 N300 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac D2 N300 Search vendor "Chiyu-tech" for product "Semac D2 N300" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Semac S1 Osdp Firmware Search vendor "Chiyu-tech" for product "Semac S1 Osdp Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Semac S1 Osdp Search vendor "Chiyu-tech" for product "Semac S1 Osdp" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Bf-631 Firmware Search vendor "Chiyu-tech" for product "Bf-631 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Bf-631 Search vendor "Chiyu-tech" for product "Bf-631" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Bf-630 Firmware Search vendor "Chiyu-tech" for product "Bf-630 Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Bf-630 Search vendor "Chiyu-tech" for product "Bf-630" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Webpass Firmware Search vendor "Chiyu-tech" for product "Webpass Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Webpass Search vendor "Chiyu-tech" for product "Webpass" | - | - |
Safe
|
| Chiyu-tech Search vendor "Chiyu-tech" | Biosense Firmware Search vendor "Chiyu-tech" for product "Biosense Firmware" | - | - |
Affected
| in | Chiyu-tech Search vendor "Chiyu-tech" | Biosense Search vendor "Chiyu-tech" for product "Biosense" | - | - |
Safe
|