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CVE-2018-0788

Status Candidate

Overview

The Windows Adobe Type Manager Font Driver (Atmfd.dll) in Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2008 SP2 and R2 SP1, and Windows Server 2012 and R2 allows an elevation of privilege vulnerability due to the way objects are handled in memory, aka "OpenType Font Driver Elevation of Privilege Vulnerability".

Related Files

Microsoft Windows Kernel ATMFD.DLL NamedEscape 0x250D Pool Corruption
Posted Jan 10, 2018
Authored by Google Security Research, mjurczyk

The Microsoft Windows OpenType ATMFD.DLL kernel-mode font driver has an undocumented "escape" interface, handled by the standard DrvEscape and DrvFontManagement functions implemented by the module. The interface is very similar to Buffered IOCTL in nature, and handles 13 different operation codes in the numerical range of 0x2502 to 0x2514. It is accessible to user-mode applications through an exported (but not documented) gdi32!NamedEscape function, which internally invokes the NtGdiExtEscape syscall.

tags | advisory, kernel
systems | windows
advisories | CVE-2018-0788
MD5 | 96b46447ba7a6c968d0db2900d57b8a3
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