CVE-2022-29402

CVSS V2 High 7.2 CVSS V3 Medium 6.8

Description

TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. This vulnerability allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.

Overview

CVE ID
CVE-2022-29402

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2022-05-25T18:15:08

Last Modified Date
2022-06-07T16:23:02

Weakness Enumerations

CWE	URL
CWE-306	http://cwe.mitre.org/data/definitions/306.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
		AND
cpe:2.3:o:tp-link:tl-wr840n_firmware:-:::::::*	1	OR
cpe:2.3:h:tp-link:tl-wr840n:6.20:::::::*	0	OR
		AND
cpe:2.3:o:tp-link:tl-wr840n_firmware:-:::::::*	1	OR
cpe:2.3:h:tp-link:tl-wr840n:5.0:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
PHYSICAL

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
6.8

Base Severity
MEDIUM

Exploitability Score
0.9

Impact Score
5.9

References

Reference URL	Reference Tags
https://k4m1ll0.com/cve-tplink-tlwr840N-uart-shell.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-29402
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-29402

History

Created	Old Value	New Value	Data Type	Notes
2022-05-25 19:00:08				Added to TrackCVE