ZDI-22-1491: 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-22-1491?
The severity of ZDI-22-1491 is critical due to the potential for arbitrary code execution by unauthenticated attackers.
How do I fix ZDI-22-1491?
To fix ZDI-22-1491, update your D-Link DIR-1935 router to the latest firmware provided by D-Link.
Who is affected by ZDI-22-1491?
ZDI-22-1491 affects users of D-Link DIR-1935 routers without the latest security updates.
What type of attacks are possible with ZDI-22-1491?
Attackers can execute arbitrary code remotely on vulnerable D-Link DIR-1935 routers.
Is authentication required to exploit ZDI-22-1491?
No, authentication is not required to exploit ZDI-22-1491, making it particularly dangerous.