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-23-1335?
The severity of ZDI-23-1335 is considered high due to the potential for arbitrary code execution.
How do I fix ZDI-23-1335?
To fix ZDI-23-1335, users should update their D-Link DIR-3040 router firmware to the latest available version.
What are the affected systems for ZDI-23-1335?
ZDI-23-1335 affects D-Link DIR-3040 routers specifically.
Does ZDI-23-1335 require authentication to exploit?
Yes, ZDI-23-1335 requires authentication to exploit the vulnerability.
What type of attack does ZDI-23-1335 enable?
ZDI-23-1335 allows network-adjacent attackers to execute arbitrary code on the affected routers.