D-Link DIR-3040 prog.cgi SetIPv6PppoeSettings stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in D-Link DIR-3040. Affected is the function SetIPv6PppoeSettings of the file prog.cgi. Such manipulation leads to stack-based overflow. This vulnerability is referenced as CVE-2023-41225. The attack needs to be initiated within the local network. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-3040 (Router Operating System) (affected version not known). Affected by this issue is the function SetIPv6PppoeSettings of the file prog.cgi. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

D-Link DIR-3040 prog.cgi SetIPv6PppoeSettings Stack-Based Buffer Overflow Remote Code Execution Vulnerability. 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. Was ZDI-CAN-21651.

The weakness was published 09/07/2023 as ZDI-23-1333. The advisory is available at zerodayinitiative.com. This vulnerability is handled as CVE-2023-41225 since 08/24/2023. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/15/2025).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-3040

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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