What is the severity of ZDI-23-1334?

The severity of ZDI-23-1334 is considered high due to its ability to allow arbitrary code execution.

How do I fix ZDI-23-1334?

To fix ZDI-23-1334, update your D-Link DIR-3040 router to the latest firmware provided by D-Link.

Who is affected by ZDI-23-1334?

Users with D-Link DIR-3040 routers with the vulnerable firmware version are affected by ZDI-23-1334.

Is authentication required to exploit ZDI-23-1334?

Yes, authentication is required to exploit the vulnerability described in ZDI-23-1334.

What type of vulnerability is ZDI-23-1334?

ZDI-23-1334 is categorized as a remote code execution vulnerability.

Vulnerability/
ZDI-23-1334

medium

6.8

7/9/2023

2/2/2025

ZDI-23-1334: D-Link DIR-3040 prog.cgi SetMyDLinkRegistration Stack-Based Buffer Overflow Remote Code Execution Vulnerability

First published: Thu Sep 07 2023(Updated: )

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before copying it to a fixed-size stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

Affected Software	Affected Version	How to fix
D-Link DIR-3040 Firmware

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-23-1334?
The severity of ZDI-23-1334 is considered high due to its ability to allow arbitrary code execution.
How do I fix ZDI-23-1334?
To fix ZDI-23-1334, update your D-Link DIR-3040 router to the latest firmware provided by D-Link.
Who is affected by ZDI-23-1334?
Users with D-Link DIR-3040 routers with the vulnerable firmware version are affected by ZDI-23-1334.
Is authentication required to exploit ZDI-23-1334?
Yes, authentication is required to exploit the vulnerability described in ZDI-23-1334.
What type of vulnerability is ZDI-23-1334?
ZDI-23-1334 is categorized as a remote code execution vulnerability.

collector/zdi-published
alias/ZDI-CAN-21652
agent/type
agent/first-publish-date
agent/last-modified-date
agent/title
agent/severity
agent/references
agent/event
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-23-1334
alias/CVE-2023-41226
agent/software-canonical-lookup
agent/software-canonical-lookup-request
agent/softwarecombine
vendor/d-link
canonical/d-link dir-3040 firmware

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