CVE-2022-43621

D-Link DIR-1935 HNAP Incorrect Comparison Authentication Bypass Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-16152.

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system.

*Credits: Anonymous

CVSS Scores

NISTv3.1 8.8

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-10-21 CVE Reserved
2022-11-03 CVE Published
2024-08-03 CVE Updated
2024-10-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-697: Incorrect Comparison

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-22-1503	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310	2023-11-08

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Dlink Search vendor "Dlink"	Dir-1935 Firmware Search vendor "Dlink" for product "Dir-1935 Firmware"	<= 1.02 Search vendor "Dlink" for product "Dir-1935 Firmware" and version " <= 1.02"	-	Affected	in	Dlink Search vendor "Dlink"	Dir-1935 Search vendor "Dlink" for product "Dir-1935"	-	-	Safe
Dlink Search vendor "Dlink"	Dir-1935 Firmware Search vendor "Dlink" for product "Dir-1935 Firmware"	1.03 Search vendor "Dlink" for product "Dir-1935 Firmware" and version "1.03"	b1	Affected	in	Dlink Search vendor "Dlink"	Dir-1935 Search vendor "Dlink" for product "Dir-1935"	-	-	Safe
Dlink Search vendor "Dlink"	Dir-1935 Firmware Search vendor "Dlink" for product "Dir-1935 Firmware"	1.03 Search vendor "Dlink" for product "Dir-1935 Firmware" and version "1.03"	b2	Affected	in	Dlink Search vendor "Dlink"	Dir-1935 Search vendor "Dlink" for product "Dir-1935"	-	-	Safe