Advisory Details

September 7th, 2023

D-Link DIR-3040 HTTP Request Processing Referer Heap-Based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2023-41229
CVSS SCORE	8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	D-Link
AFFECTED PRODUCTS	DIR-3040
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 routers. Authentication is not 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 heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	D-Link has issued an update to correct this vulnerability. More details can be found at: https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10350
DISCLOSURE TIMELINE	2023-07-12 - Vulnerability reported to vendor 2023-09-07 - Coordinated public release of advisory
CREDIT	Nicholas Zubrisky

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