ZDI-CAN-16139: D-Link DIR-1935 HNAP_AUTH 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-1935 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of Login requests to the web management portal. When parsing the HNAPAUTH header, the process does not properly validate 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
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-16139?
The severity of ZDI-CAN-16139 is critical due to the ability for network-adjacent attackers to execute arbitrary code without authentication.
How do I fix ZDI-CAN-16139?
To fix ZDI-CAN-16139, users should update their D-Link DIR-1935 routers to the latest firmware version provided by D-Link.
Who is affected by ZDI-CAN-16139?
Users of D-Link DIR-1935 routers are affected by ZDI-CAN-16139, particularly those with unpatched firmware.
What type of attack is facilitated by ZDI-CAN-16139?
ZDI-CAN-16139 facilitates remote code execution attacks by allowing unauthorized access to the web management interface.
Is authentication required to exploit ZDI-CAN-16139?
No, authentication is not required to exploit ZDI-CAN-16139, making it more dangerous for affected users.