CVE-2021-31641

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1

Description

An unauthenticated XSS vulnerability exists in several IoT devices from CHIYU Technology, including BF-630, BF-450M, BF-430, BF-431, BF631-W, BF830-W, Webpass, BF-MINI-W, and SEMAC due to a lack of sanitization when the HTTP 404 message is generated.

Overview

CVE ID
CVE-2021-31641

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-06-01T15:15:07

Last Modified Date
2021-06-08T20:26:41

Weakness Enumerations

CWE	URL
CWE-79	http://cwe.mitre.org/data/definitions/79.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
		AND
cpe:2.3:o:chiyu-tech:bf-430_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-430:-:::::::*	0	OR
		AND
cpe:2.3:o:chiyu-tech:bf-431_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-431:-:::::::*	0	OR
		AND
cpe:2.3:o:chiyu-tech:bf-450m_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-450m:-:::::::*	0	OR
		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-630_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-630:-:::::::*	0	OR
		AND
cpe:2.3:o:chiyu-tech:bf-631w_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-631w:-:::::::*	0	OR
		AND
cpe:2.3:o:chiyu-tech:bf-830w_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bf-830w:-:::::::*	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:bfminiw_firmware:-:::::::*	1	OR
cpe:2.3:h:chiyu-tech:bfminiw:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
CHANGED

Confidentiality Impact
LOW

Availability Impact
NONE

Base Score
6.1

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
2.7

References

Reference URL	Reference Tags
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/#.YLY_lXmSlPY	Exploit Third Party Advisory
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html	Vendor Advisory
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31641	Exploit Third Party Advisory
http://packetstormsecurity.com/files/162887/CHIYU-IoT-Cross-Site-Scripting.html	Exploit Third Party Advisory VDB Entry

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-31641
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31641

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:12:15				Added to TrackCVE
2022-12-05 03:22:05	2021-06-01T15:15Z	2021-06-01T15:15:07	CVE Published Date	updated
2022-12-05 03:22:05		2021-06-08T20:26:41	CVE Modified Date	updated
2022-12-05 03:22:05		Analyzed	Vulnerability Status	updated