What is the severity of ZDI-CAN-21672?

The severity of ZDI-CAN-21672 is high due to the potential for arbitrary code execution by network-adjacent attackers.

How do I fix ZDI-CAN-21672?

To fix ZDI-CAN-21672, users should update their D-Link DIR-X3260 routers to the latest firmware version that addresses this vulnerability.

Who is affected by ZDI-CAN-21672?

ZDI-CAN-21672 affects users of D-Link DIR-X3260 routers that have not been updated to a secure firmware version.

What is the attack vector for ZDI-CAN-21672?

The attack vector for ZDI-CAN-21672 involves network-adjacent attackers who can exploit the flaw in the prog.cgi binary.

Is authentication required to exploit ZDI-CAN-21672?

Yes, authentication is required to exploit ZDI-CAN-21672, limiting the potential attack surface.

Vulnerability/
ZDI-CAN-21672

medium

6.8

11/1/2024

3/5/2024

ZDI-CAN-21672: ZDI-24-042: D-Link DIR-X3260 prog.cgi SetTriggerPPPoEValidate Stack-based Buffer Overflow Remote Code Execution Vulnerability

First published: Thu Jan 11 2024(Updated: )

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-X3260 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-X3260

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Frequently Asked Questions

What is the severity of ZDI-CAN-21672?
The severity of ZDI-CAN-21672 is high due to the potential for arbitrary code execution by network-adjacent attackers.
How do I fix ZDI-CAN-21672?
To fix ZDI-CAN-21672, users should update their D-Link DIR-X3260 routers to the latest firmware version that addresses this vulnerability.
Who is affected by ZDI-CAN-21672?
ZDI-CAN-21672 affects users of D-Link DIR-X3260 routers that have not been updated to a secure firmware version.
What is the attack vector for ZDI-CAN-21672?
The attack vector for ZDI-CAN-21672 involves network-adjacent attackers who can exploit the flaw in the prog.cgi binary.
Is authentication required to exploit ZDI-CAN-21672?
Yes, authentication is required to exploit ZDI-CAN-21672, limiting the potential attack surface.

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