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

Summaryinfo

A vulnerability labeled as critical has been found in D-Link DIR-3040. The impacted element is the function SetQuickVPNSettings of the file prog.cgi. Executing a manipulation can lead to stack-based overflow. This vulnerability appears as CVE-2023-41217. The attacker needs to be present on the local network. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in D-Link DIR-3040 (Router Operating System) (the affected version unknown). This vulnerability affects the function SetQuickVPNSettings of the file prog.cgi. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is 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). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

D-Link DIR-3040 prog.cgi SetQuickVPNSettings Password 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-21617.

The weakness was presented 09/07/2023 as ZDI-23-1325. The advisory is available at zerodayinitiative.com. This vulnerability was named CVE-2023-41217 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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