What is the severity of ZDI-23-1335?

The severity of ZDI-23-1335 is considered high due to the potential for arbitrary code execution.

How do I fix ZDI-23-1335?

To fix ZDI-23-1335, users should update their D-Link DIR-3040 router firmware to the latest available version.

What are the affected systems for ZDI-23-1335?

ZDI-23-1335 affects D-Link DIR-3040 routers specifically.

Does ZDI-23-1335 require authentication to exploit?

Yes, ZDI-23-1335 requires authentication to exploit the vulnerability.

Vulnerability/
ZDI-23-1335

medium

6.8

7/9/2023

2/2/2025

ZDI-23-1335: D-Link DIR-3040 prog.cgi SetTriggerPPPoEValidate 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-23-1335?
The severity of ZDI-23-1335 is considered high due to the potential for arbitrary code execution.
How do I fix ZDI-23-1335?
To fix ZDI-23-1335, users should update their D-Link DIR-3040 router firmware to the latest available version.
What are the affected systems for ZDI-23-1335?
ZDI-23-1335 affects D-Link DIR-3040 routers specifically.
Does ZDI-23-1335 require authentication to exploit?
Yes, ZDI-23-1335 requires authentication to exploit the vulnerability.
What type of attack does ZDI-23-1335 enable?
ZDI-23-1335 allows network-adjacent attackers to execute arbitrary code on the affected routers.

collector/zdi-published
alias/ZDI-CAN-21653
agent/type
agent/first-publish-date
agent/last-modified-date
agent/title
agent/severity
agent/references
agent/softwarecombine
agent/event
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-23-1335
alias/CVE-2023-41227
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/d-link
canonical/d-link dir-3040 firmware

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