VulnerabilityModified

CVE-2021-31643

An XSS vulnerability exists in several IoT devices from CHIYU Technology, including SEMAC, Biosense, BF-630, BF-631, and Webpass due to a lack of sanitization on the component if.cgi - username parameter.

MEDIUM 5.4EPSS 88.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 88.4%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

CVSS 3.1: 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS: 88.45% probability · 100th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: chiyu-tech/bf-631 firmware · chiyu-tech/bf-630 firmware · chiyu-tech/semac s2 firmware · chiyu-tech/semac d1 firmware · chiyu-tech/semac d2 firmware · chiyu-tech/semac d4 firmware · chiyu-tech/semac s3v3 firmware · chiyu-tech/semac d2 n300 firmware · chiyu-tech/semac s1 osdp firmware · chiyu-tech/webpass firmware · chiyu-tech/biosense firmware
Source: cve@mitre.org

References

http://packetstormsecurity.com/files/162887/CHIYU-IoT-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31643Exploit, Third Party Advisory
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/Exploit, Third Party Advisory
https://www.chiyu-tech.com/msg/message-Firmware-update-87.htmlVendor Advisory
http://packetstormsecurity.com/files/162887/CHIYU-IoT-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31643Exploit, Third Party Advisory
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/Exploit, Third Party Advisory
https://www.chiyu-tech.com/msg/message-Firmware-update-87.htmlVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.