ZDI-24-444: (0Day) D-Link DIR-2640 HTTP Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability
First published: Tue May 14 2024(Updated: )
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-2640-US routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within prog.cgi, 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 the length of user-supplied data prior to copying it to a fixed-length 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-2640-US 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-24-444?
The severity of ZDI-24-444 is critical due to the potential for remote code execution without authentication.
How do I fix ZDI-24-444?
To fix ZDI-24-444, update your D-Link DIR-2640-US router to the latest firmware version provided by D-Link.
Who is affected by ZDI-24-444?
ZDI-24-444 affects users of the D-Link DIR-2640-US router running vulnerable firmware versions.
Can ZDI-24-444 be exploited remotely?
Yes, ZDI-24-444 can be exploited remotely by network-adjacent attackers without requiring authentication.
What type of flaw is present in ZDI-24-444?
ZDI-24-444 has a flaw related to improper handling of HNAP requests in prog.cgi, allowing arbitrary code execution.
- agent/last-modified-date
- agent/title
- agent/first-publish-date
- agent/type
- agent/references
- agent/severity
- collector/zdi-published
- source/ZDI
- alias/ZDI-CAN-21853
- agent/description
- agent/trending
- agent/source
- agent/softwarecombine
- agent/tags
- collector/zdi-advisory
- alias/ZDI-24-444
- alias/CVE-2024-5293
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/event
- vendor/d-link
- canonical/d-link dir-2640-us firmware