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-23-1334?
The severity of ZDI-23-1334 is considered high due to its ability to allow arbitrary code execution.
How do I fix ZDI-23-1334?
To fix ZDI-23-1334, update your D-Link DIR-3040 router to the latest firmware provided by D-Link.
Who is affected by ZDI-23-1334?
Users with D-Link DIR-3040 routers with the vulnerable firmware version are affected by ZDI-23-1334.
Is authentication required to exploit ZDI-23-1334?
Yes, authentication is required to exploit the vulnerability described in ZDI-23-1334.
What type of vulnerability is ZDI-23-1334?
ZDI-23-1334 is categorized as a remote code execution vulnerability.