D-Link DIR-X3260 prog.cgi SetUsersSettings stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in D-Link DIR-X3260. This vulnerability affects the function SetUsersSettings of the file prog.cgi. Such manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2023-51631. Access to the local network is required for this attack to succeed. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in D-Link DIR-X3260 (Router Operating System) (the affected version unknown) and classified as critical. Affected by this issue is the function SetUsersSettings 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-X3260 prog.cgi SetUsersSettings 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-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. Was ZDI-CAN-21675.

The weakness was shared 01/12/2024. The advisory is shared for download at zerodayinitiative.com. This vulnerability is handled as CVE-2023-51631 since 12/20/2023. 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 08/07/2025).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-X3260

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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