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Category:   Application (Generic)  >   Microsoft .NET Vendors:   Microsoft
Microsoft .NET Framework File Processing Flaw Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1041636
SecurityTracker URL:  http://securitytracker.com/id/1041636
CVE Reference:   CVE-2018-8421   (Links to External Site)
Date:  Sep 11 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2
Description:   A vulnerability was reported in Microsoft .NET. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted document or application that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

Soroush Dalili of NCC Group reported this vulnerability.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457914
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457915
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457917
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457921
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457918
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457919
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457920
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457132
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457916
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457128
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457131
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457138
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4457142

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Windows (Any)

Message History:   None.


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