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

Summaryinfo

A vulnerability marked as critical has been reported in D-Link DIR-3040. This affects the function SetDynamicDNSSettings of the file prog.cgi. The manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2023-41216. Access to the local network is required for this attack to succeed. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-3040 (Router Operating System) (the affected version is unknown). This issue affects the function SetDynamicDNSSettings 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. The summary by CVE is:

D-Link DIR-3040 prog.cgi SetDynamicDNSSettings 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-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21616.

The weakness was shared 09/07/2023 as ZDI-23-1324. It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2023-41216 since 08/24/2023. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around 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/

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CPE 2.2info

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Entryinfo

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