ZDI-22-1495: D-Link DIR-1935 SetStaticRouteIPv4Settings NetMask 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. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of SetStaticRouteIPv4Settings requests to the web management portal. When parsing the NetMask element, 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 | Affected Version | How to fix |
|---|---|---|
| D-Link DIR-1935 Firmware |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-1495?
ZDI-22-1495 has a high severity due to its potential for remote code execution.
How can I fix ZDI-22-1495?
To fix ZDI-22-1495, update the D-Link DIR-1935 router to the latest firmware version provided by the manufacturer.
Who is affected by ZDI-22-1495?
Owners of D-Link DIR-1935 routers are affected by the ZDI-22-1495 vulnerability.
What type of vulnerability is ZDI-22-1495?
ZDI-22-1495 is an arbitrary code execution vulnerability that can be exploited by network-adjacent attackers.
Is authentication required to exploit ZDI-22-1495?
Yes, while authentication is required, the vulnerability allows for bypassing existing authentication mechanisms.
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