CVE-2021-31642

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 94%
VendorProductVersion
chiyu-techsemac_s2_firmware
-
chiyu-techsemac_d1_firmware
-
chiyu-techsemac_d2_firmware
-
chiyu-techsemac_d4_firmware
-
chiyu-techsemac_s3v3_firmware
-
chiyu-techsemac_d2_n300_firmware
-
chiyu-techsemac_s1_osdp_firmware
-
chiyu-techbf-631_firmware
-
chiyu-techbf-630_firmware
-
chiyu-techwebpass_firmware
-
chiyu-techbiosense_firmware
-
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html