CVE-2022-43622

D-Link DIR-1935 HNAP_AUTH Stack-based Buffer Overflow Remote Code Execution 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 execute arbitrary code 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 Login requests to the web management portal. When parsing the HNAP_AUTH header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-16139.

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 Login requests to the web management portal. When parsing the HNAP_AUTH header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

*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
2024-09-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-22-1491	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