CVE-2021-34829

D-Link DAP-1330 lighttpd http_parse_request 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 DAP-1330 1.13B01 BETA routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the HNAP_AUTH HTTP header. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-12065.

Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los routers D-Link DAP-1330 versiones 1.13B01 BETA. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta en el manejo del encabezado HTTP HNAP_AUTH. El problema resulta de la falta de comprobación apropiada de la longitud de los datos suministrados por el usuario antes de copiarlos en un búfer de fixed-length. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto del dispositivo. Fue ZDI-CAN-12065

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-1330 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of the HNAP_AUTH HTTP header. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

*Credits: phieulang

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-10 CVE Published
2021-06-17 CVE Reserved
2024-08-01 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (1)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-21-681	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

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"	Dap-1330 Firmware Search vendor "Dlink" for product "Dap-1330 Firmware"	1.13b01 Search vendor "Dlink" for product "Dap-1330 Firmware" and version "1.13b01"	beta	Affected	in	Dlink Search vendor "Dlink"	Dap-1330 Search vendor "Dlink" for product "Dap-1330"	-	-	Safe