CVE-2021-43662

CVSS V2 Low 3.3 CVSS V3 Medium 6.5

Description

totolink EX300_v2, ver V4.0.3c.140_B20210429 and A720R ,ver V4.1.5cu.470_B20200911 have an issue which causes uncontrolled resource consumption.

Overview

CVE ID
CVE-2021-43662

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2022-03-31T00:15:07

Last Modified Date
2022-07-12T17:42:04

Weakness Enumerations

CWE	URL
CWE-770	http://cwe.mitre.org/data/definitions/770.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
		AND
cpe:2.3:o:totolink:ex300_v2_firmware:4.0.3c.140_b20210429:::::::*	1	OR
cpe:2.3:h:totolink:ex300_v2:-:::::::*	0	OR
		AND
cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.470_b20200911:::::::*	1	OR
cpe:2.3:h:totolink:a720r:-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
ADJACENT_NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
3.3

Severity
LOW

Exploitability Score
6.5

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
ADJACENT_NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

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://github.com/chibataiki/iot-vuls/blob/main/totolink/dos.md

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-43662
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43662

History

Created	Old Value	New Value	Data Type	Notes
2022-04-04 00:39:58				Added to TrackCVE
2022-12-06 13:49:42	2022-03-31T00:15Z	2022-03-31T00:15:07	CVE Published Date	updated
2022-12-06 13:49:42		2022-07-12T17:42:04	CVE Modified Date	updated
2022-12-06 13:49:42		Analyzed	Vulnerability Status	updated