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

Summaryinfo

A vulnerability classified as critical was found in D-Link DIR-3040. This affects the function SetTriggerPPPoEValidate of the file prog.cgi. The manipulation results in stack-based overflow. This vulnerability was named CVE-2023-41227. The attack needs to be approached within the local network. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in D-Link DIR-3040 (Router Operating System) (version unknown). Affected is the function SetTriggerPPPoEValidate of the file prog.cgi. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

D-Link DIR-3040 prog.cgi SetTriggerPPPoEValidate 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-21653.

The weakness was presented 09/07/2023 as ZDI-23-1335. The advisory is shared for download at zerodayinitiative.com. This vulnerability is traded as CVE-2023-41227 since 08/24/2023. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (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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