Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), integrity (I:H) and availability (A:H). What does that mean for this vulnerability?
The attacker can execute arbitrary Desktop Flows scripts in the target user session by registering the machine to their own malicious Entra tenant, extracting the user's Sid, and creating a malicious AD domain with the same Sid. This allows them to mint valid Entra ID tokens that the attacked machine will trust to run desktop automation in the session of the user with the matching Sid.
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.
According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?
An attacker who successfully exploited this vulnerability could remotely execute arbitrary Desktop Flows script in an active open Windows session of the target user.
How do I get the updated app?
See Troubleshoot desktop flow action failures for update information.
Refer to the following table for the fixed build version that addresses this vulnerability.
2.41: 2.41, 2.41.178.24249: 2.41.178.24249, 2.42: 2.42, 2.42.331.24249: 2.42.331.24249, 2.43: 2.43, 2.43.249.24249: 2.43.249.24249, 2.44: 2.44, 2.44.55.24249: 2.44.55.24249, 2.45: 2.45, 2.45.404.24249: 2.45.404.24249, 2.46: 2.46, 2.46.181.24249: 2.46.181.24249, 2.47: 2.47, 2.47.119.24249: 2.47.119.24249
Security updates
2.47.119.24249 — https://apps.microsoft.com/detail/9nftch6j7fhv?launch=true&mode=full&hl=en-us&gl=us&ocid=bingwebsearch
Vulnerabilities 1
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High 8.5
Microsoft Power Automate Desktop Remote Code Execution Vulnerability
Microsoft Power Automate Desktop Remote Code Execution Vulnerability
Revision history
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#1
Information published.
References
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CVE-2024-43479 Microsoft Power Automate Desktop Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43479
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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