ZDI-21-1556: Microsoft Azure Defender for IoT update-handshake Endpoint SQL Injection Authentication Bypass Vulnerability
This vulnerability allows remote attackers to bypass authentication on affected installations of Microsoft Azure Defender for IoT. Authentication is not required to exploit this vulnerability. The specific flaw exists within the update-handshake endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to bypass authentication on the system and execute arbitrary code in the context of root.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Defender for IoT |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-1556?
The severity of ZDI-21-1556 is considered critical, as it allows remote unauthenticated access.
How do I fix ZDI-21-1556?
To fix ZDI-21-1556, apply the latest security updates provided by Microsoft for Azure Defender for IoT.
Who is affected by ZDI-21-1556?
ZDI-21-1556 affects installations of Microsoft Azure Defender for IoT that have not applied the necessary patches.
What type of attacks can be executed due to ZDI-21-1556?
Due to ZDI-21-1556, attackers can potentially bypass authentication and gain unauthorized access to the affected system.
Is authentication required to exploit ZDI-21-1556?
No, authentication is not required to exploit ZDI-21-1556, making it particularly dangerous.
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