Microsoft Azure Defender for IoT update-handshake Endpoint SQL Injection Authentication Bypass Vulnerability
Vulnerability Details
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.
Additional Details
Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42311
Disclosure Timeline
- 2021-09-17 - Vulnerability reported to vendor
- 2021-12-21 - Coordinated public release of advisory
Credit
Anonymous
