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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Windows PowerShell Deserialization Error Lets Remote Authenticated Users Execute Arbitrary Code on the Target System
SecurityTracker Alert ID:  1038854
SecurityTracker URL:  http://securitytracker.com/id/1038854
CVE Reference:   CVE-2017-8565   (Links to External Site)
Date:  Jul 11 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7 SP1, 2008 R2 SP1, 2008 SP2, 2012, 8.1, 2012 R2, RT 8.1, 10, 10 Version 1511, 2016, 10 Version 1607, 10 Version 1703
Description:   A vulnerability was reported in Windows PowerShell. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated user can send specially crafted data to trigger a deserialization error in PowerShell when PSObject wraps a common information model (CIM) instance to execute arbitrary code in a PowerShell remote session.

Oleksandr Mirosh and Alvaro Munoz (@pwntester) from Hewlett-Packard Enterprise Security reported this vulnerability.

Impact:   A remote authenticated user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix.

The Microsoft advisory is available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8565

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8565 (Links to External Site)
Cause:   Access control error

Message History:   None.


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