Summary
Impact: Remote Code Execution. Microsoft rating: Critical. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires the attacker to be able to send a malicious update package to the Defender for IoT sensor over the network. To do this, the attacker would first need to authenticate themselves and gain the necessary permissions to initiate the update process.
How could an attacker exploit this vulnerability?
Successful exploitation of this path traversal vulnerability would require an attacker to have user credentials on the targeted machine and then send a tar file to the Defender for IoT sensor. After the extraction process completed, the attacker could then send unsigned update packages and overwrite any file they chose.
What actions do customers need to take to protect themselves from this vulnerability?
Customers need to update their Defender for IoT software to version 24.1.3 or above. For more information, see OT monitoring software versions.
Security updates
24.1.3 — https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/release-notes#versions-241x
Vulnerabilities 1
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High 8.8
Microsoft Defender for IoT Remote Code Execution Vulnerability
Microsoft Defender for IoT Remote Code Execution Vulnerability
Revision history
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#2
Added an FAQ. This is an information change only.
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#1
Information published.
References
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CVE-2024-21323 Microsoft Defender for IoT Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21323
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss