CVE-2015-1769 - Bespattered Mocky

Description

Mount Manager in Microsoft Windows Vista SP2 Windows Server 2008 SP2 and R2 SP1 Windows 7 SP1 Windows 8 Windows 8.1 Windows Server 2012 Gold and R2 Windows RT Gold and 8.1 and Windows 10 mishandles symlinks which allows physically proximate attackers to execute arbitrary code by connecting a crafted USB device aka \Mount Manager Elevation of Privilege Vulnerability.\

Reference

http://blogs.technet.com/b/srd/archive/2015/08/11/defending-against-cve-2015-1769-a-logical-issue-exploited-via-a-malicious-usb-stick.aspx http://www.securitytracker.com/id/1033244 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-085

Exploit

CVE-2015-1769

PoC for CVE-2015-1769

VHD file to reproduce CVE-2015-1769. VHD doesn’t contain actual payload only notepad.exe.

Upon mounting inspect system log for reported blocked error if latest patch is installed.

Batch script shows how symbolic link was created that triggers the vulnerability same mechanism can be used to modify HDD or USB drive.