CVE-2021-42659

CVSS V2 Medium 6.1 CVSS V3 Medium 6.5

Description

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.

Overview

CVE ID
CVE-2021-42659

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2022-05-24T12:15:07

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

Weakness Enumerations

CWE	URL
CWE-119	http://cwe.mitre.org/data/definitions/119.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
		AND
cpe:2.3:o:tenda:ac9_firmware:15.03.05.19\(6318\):::::::*	1	OR
cpe:2.3:h:tenda:ac9:1.0:::::::*	0	OR
		AND
cpe:2.3:o:tenda:ac9_firmware:15.03.06.42_multi:::::::*	1	OR
cpe:2.3:h:tenda:ac9:3.0:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
ADJACENT_NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
COMPLETE

Base Score
6.1

Severity
MEDIUM

Exploitability Score
6.5

Impact Score
6.9

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://www.cnvd.org.cn/flaw/show/CNVD-2021-24948
https://github.com/Lyc-heng/routers/blob/main/routers/stack4.md

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-42659
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42659

History

Created	Old Value	New Value	Data Type	Notes
2022-05-24 13:00:06				Added to TrackCVE