ZDI-CAN-21652: ZDI-23-1334: D-Link DIR-3040 prog.cgi SetMyDLinkRegistration 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.
Other sources
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 ZDI has assigned a CVSS rating of 6.8. The following CVEs are assigned: CVE-2023-41226.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-21652?
The severity of ZDI-CAN-21652 is considered high due to its ability to allow remote code execution by authenticated attackers.
How do I fix ZDI-CAN-21652?
To fix ZDI-CAN-21652, update the D-Link DIR-3040 router firmware to the latest version provided by D-Link.
What are the potential impacts of ZDI-CAN-21652?
The potential impact of ZDI-CAN-21652 includes unauthorized execution of arbitrary code and potential takeover of the router.
Who is affected by ZDI-CAN-21652?
D-Link DIR-3040 users are affected by ZDI-CAN-21652, especially those with vulnerable firmware versions.
Is authentication required to exploit ZDI-CAN-21652?
Yes, authentication is required to exploit the vulnerability identified as ZDI-CAN-21652.