ZDI-CAN-21669: ZDI-24-040: D-Link DIR-X3260 prog.cgi SetIPv6PppoeSettings 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-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-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-X3260 routers. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8. The following CVEs are assigned: CVE-2023-51620.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-21669?
The severity of ZDI-CAN-21669 is critical due to the potential for arbitrary code execution.
How do I fix ZDI-CAN-21669?
To address ZDI-CAN-21669, update your D-Link DIR-X3260 router to the latest firmware version provided by D-Link.
Who is impacted by ZDI-CAN-21669?
ZDI-CAN-21669 affects users of the D-Link DIR-X3260 routers that have not been patched.
Can ZDI-CAN-21669 be exploited remotely?
ZDI-CAN-21669 requires authentication, so exploitation is limited to network-adjacent attackers with valid credentials.
What specific component is vulnerable in ZDI-CAN-21669?
The specific component affected in ZDI-CAN-21669 is the prog.cgi binary that handles HNAP requests.