CVE-2021-31642

CVSS V2 Medium 6.8 CVSS V3 Medium 6.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-31642
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-06-01T15:15:07
  • Last Modified Date
  • 2021-06-08T19:09:55
Weakness Enumerations
CWE URL
CWE-190 http://cwe.mitre.org/data/definitions/190.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:chiyu-tech:semac_s2_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_s2:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_d1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_d1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_d2_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_d2:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_d4_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_d4:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_s3v3_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_s3v3:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_d2_n300_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_d2_n300:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:semac_s1_osdp_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:semac_s1_osdp:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:bf-631_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:bf-631:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:bf-630_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:bf-630:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:webpass_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:webpass:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:chiyu-tech:biosense_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:chiyu-tech:biosense:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html Vendor Advisory
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/ Exploit Third Party Advisory
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31642 Exploit Third Party Advisory
http://packetstormsecurity.com/files/162934/CHIYU-IoT-Denial-Of-Service.html Exploit Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31642
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31642
History
Created Old Value New Value Data Type Notes
2022-05-10 07:12:16 Added to TrackCVE
2022-12-05 03:22:10 2021-06-01T15:15Z 2021-06-01T15:15:07 CVE Published Date updated
2022-12-05 03:22:10 2021-06-08T19:09:55 CVE Modified Date updated
2022-12-05 03:22:10 Analyzed Vulnerability Status updated