ZDI-CAN-21653: ZDI-23-1335: 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.
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-2023-41227.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-21653?
The severity of ZDI-CAN-21653 is considered critical due to the potential for remote code execution.
How do I fix ZDI-CAN-21653?
You can fix ZDI-CAN-21653 by updating the D-Link DIR-3040 firmware to the latest version provided by the manufacturer.
Who is affected by ZDI-CAN-21653?
D-Link DIR-3040 router users with unpatched firmware are affected by ZDI-CAN-21653.
What type of attack does ZDI-CAN-21653 enable?
ZDI-CAN-21653 enables network-adjacent attackers to execute arbitrary code on affected devices.
Is authentication required to exploit ZDI-CAN-21653?
Yes, authentication is required to exploit ZDI-CAN-21653.