CVE-2021-43722

D-Link DIR-645 1.03 A1 is vulnerable to Buffer Overflow. The hnap_main function in the cgibin handler uses sprintf to format the soapaction header onto the stack and has no limit on the size.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 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

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md	Exploit Third Party Advisory
https://www.dlink.com/en/security-bulletin/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:dlink:dir-645_firmware:1.03:*:*:*:*:*:*:*

cpe:2.3:h:dlink:dir-645:a1:*:*:*:*:*:*:*

History

08 Apr 2022, 06:33

Type	Values Removed	Values Added
CWE		CWE-787
CPE		cpe:2.3:h:dlink:dir-645:a1:::::::* cpe:2.3:o:dlink:dir-645_firmware:1.03:::::::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
References	~~(MISC) https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md -~~	(MISC) https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md - Exploit, Third Party Advisory
References	~~(MISC) https://www.dlink.com/en/security-bulletin/ -~~	(MISC) https://www.dlink.com/en/security-bulletin/ - Vendor Advisory

31 Mar 2022, 21:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-03-31 21:15

Updated : 2024-02-04 22:29

NVD link : CVE-2021-43722

Mitre link : CVE-2021-43722

CVE.ORG link : CVE-2021-43722

JSON object : View

Products Affected

dlink

dir-645
dir-645_firmware

CWE

CWE-787

Out-of-bounds Write

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