ZDI-CAN-21674: ZDI-23-1338: D-Link DIR-3040 HTTP Request Processing Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability
First published: Thu Sep 07 2023(Updated: )
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 fixed size stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| D-Link DIR-3040 Firmware |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of ZDI-CAN-21674?
The severity of ZDI-CAN-21674 is critical due to the potential for remote code execution.
How do I fix ZDI-CAN-21674?
To fix ZDI-CAN-21674, update your D-Link DIR-3040 router to the latest firmware version provided by D-Link.
Who is affected by ZDI-CAN-21674?
ZDI-CAN-21674 affects all installations of D-Link DIR-3040 routers that have the vulnerable firmware.
Can ZDI-CAN-21674 be exploited without authentication?
Yes, ZDI-CAN-21674 can be exploited without any authentication, making it particularly dangerous.
What component is vulnerable in ZDI-CAN-21674?
The prog.cgi binary that handles HNAP requests is the specific component vulnerable in ZDI-CAN-21674.
- collector/zdi-published
- alias/ZDI-CAN-21674
- agent/last-modified-date
- agent/first-publish-date
- agent/title
- agent/severity
- agent/references
- agent/event
- agent/description
- agent/source
- agent/type
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-23-1338
- alias/CVE-2023-41230
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/softwarecombine
- vendor/d-link
- canonical/d-link dir-3040 firmware