ZDI-CAN-21594: ZDI-24-037: D-Link DIR-X3260 prog.cgi SetWanSettings Stack-Based Buffer Overflow Remote Code Execution Vulnerability
First published: Thu Jan 11 2024(Updated: )
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-X3260 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-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-X3260 |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-CAN-21594?
ZDI-CAN-21594 is classified as a critical vulnerability due to its potential for arbitrary code execution.
How do I fix ZDI-CAN-21594?
To remediate ZDI-CAN-21594, users should apply the latest firmware updates provided by D-Link for the DIR-X3260 router.
Who is affected by ZDI-CAN-21594?
ZDI-CAN-21594 affects users of D-Link DIR-X3260 routers that have not applied the necessary security patches.
Can ZDI-CAN-21594 be exploited remotely?
No, ZDI-CAN-21594 requires authentication, thus it can only be exploited by network-adjacent attackers.
What are the implications of ZDI-CAN-21594?
If successfully exploited, ZDI-CAN-21594 can allow attackers to execute arbitrary code, compromising the router and potentially the network it serves.
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