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Message-ID: <570D39E0.2010601@securify.nl> Date: Tue, 12 Apr 2016 20:09:36 +0200 From: "Securify B.V." <lists@...urify.nl> To: fulldisclosure@...lists.org Subject: [FD] .NET Framework 4.6 allows side loading of Windows API Set DLL ------------------------------------------------------------------------ .NET Framework 4.6 allows side loading of Windows API Set DLL ------------------------------------------------------------------------ Yorick Koster, February 2016 ------------------------------------------------------------------------ Abstract ------------------------------------------------------------------------ A DLL side loading vulnerability was found in the .NET Framework version 4.6 when running on Windows Vista or Windows 7. This issue can be exploited by luring a victim into opening an Office document from the attacker's share. An attacker can use this issue to execute arbitrary code with the privileges of the target user. This can potentially result in the attacker taking complete control of the affected system. If the WebDAV Mini-Redirector is enabled, it is possible to exploit this issue over the internet. This issue can be exploited even if the Office document is opened in Protected View. ------------------------------------------------------------------------ See also ------------------------------------------------------------------------ - CVE-2016-0148 - MS16-041 : Security Update for .NET Framework (3148789) - http://www.greyhathacker.net/docs/OfficeDLLhijacking.zip - https://twitter.com/matthias_kaiser/status/697163250111291398 - http://hyp3rlinx.altervista.org/advisories/MICROSOFT-PPT-VIEWER-CODE-EXEC.txt ------------------------------------------------------------------------ Tested versions ------------------------------------------------------------------------ This issue was successfully verified on Vista running Office 2010 and .NET 4.6.81.0 & Windows 7 running Office 2013 and .NET 4.6.1055.0. ------------------------------------------------------------------------ Fix ------------------------------------------------------------------------ Microsoft released MS16-041 that fixes this vulnerability. ------------------------------------------------------------------------ Details ------------------------------------------------------------------------ https://www.securify.nl/advisory/SFY20160201/_net_framework_4_6_allows_side_loading_of_windows_api_set_dll.html _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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