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    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.

    Published:Jun 1, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 1, 2021
    EPSS Score:0.30213
    CVSS Score:6.5

    Affected Products

    Vendor
    Chiyu-tech
    Product
    Bf-630
    Vendor
    Chiyu-tech
    Product
    Bf-630 Firmware
    Vendor
    Chiyu-tech
    Product
    Bf-631
    Vendor
    Chiyu-tech
    Product
    Bf-631 Firmware
    Vendor
    Chiyu-tech
    Product
    Biosense
    Vendor
    Chiyu-tech
    Product
    Biosense Firmware
    Vendor
    Chiyu-tech
    Product
    Semac D1
    Vendor
    Chiyu-tech
    Product
    Semac D1 Firmware
    Vendor
    Chiyu-tech
    Product
    Semac D2
    Vendor
    Chiyu-tech
    Product
    Semac D2 Firmware
    Vendor
    Chiyu-tech
    Product
    Semac D2 N300
    Vendor
    Chiyu-tech
    Product
    Semac D2 N300 Firmware
    Vendor
    Chiyu-tech
    Product
    Semac D4
    Vendor
    Chiyu-tech
    Product
    Semac D4 Firmware
    Vendor
    Chiyu-tech
    Product
    Semac S1 Osdp
    Vendor
    Chiyu-tech
    Product
    Semac S1 Osdp Firmware
    Vendor
    Chiyu-tech
    Product
    Semac S2
    Vendor
    Chiyu-tech
    Product
    Semac S2 Firmware
    Vendor
    Chiyu-tech
    Product
    Semac S3v3
    Vendor
    Chiyu-tech
    Product
    Semac S3v3 Firmware
    Vendor
    Chiyu-tech
    Product
    Webpass
    Vendor
    Chiyu-tech
    Product
    Webpass Firmware

    Exploits

    http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.htmlhttps://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.htmlhttps://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/https://www.exploit-db.com/exploits/49937

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High