CVE-2021-33270

D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_800462c4 in /formAdvFirewall. This vulnerability is triggered via a crafted POST request.

CVSS v3 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln06	Exploit Third Party Advisory
https://www.dlink.com/en/security-bulletin/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:dlink:dir-809_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:dlink:dir-809:-:*:*:*:*:*:*:*

History

03 Dec 2021, 14:01

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 10.0 v3 : 9.8
CWE		CWE-787
CPE		cpe:2.3:h:dlink:dir-809:-:::::::* cpe:2.3:o:dlink:dir-809_firmware::::::::
References	~~(MISC) https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln06 -~~	(MISC) https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln06 - Exploit, Third Party Advisory
References	~~(MISC) https://www.dlink.com/en/security-bulletin/ -~~	(MISC) https://www.dlink.com/en/security-bulletin/ - Vendor Advisory

01 Dec 2021, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-12-01 22:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-33270

Mitre link : CVE-2021-33270

CVE.ORG link : CVE-2021-33270

JSON object : View

Products Affected

dlink

dir-809_firmware
dir-809

CWE

CWE-787

Out-of-bounds Write

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