[tfaber] 74991: [WIN32K:NTUSER] - Initialize BITMAPINFOHEADER::biSize before calling GreGetDIBitsInternal in IntSynthesizeDib. Fixes use of uninitialized memory and subsequent stack buffer overflow...

Author: tfaber
Date: Sun Jun 11 06:53:28 2017
New Revision: 74991

URL: http://svn.reactos.org/svn/reactos?rev=74991&view=rev
Log:
[WIN32K:NTUSER]
- Initialize BITMAPINFOHEADER::biSize before calling GreGetDIBitsInternal in
IntSynthesizeDib. Fixes use of uninitialized memory and subsequent stack buffer overflow.
CORE-13408

Modified:
    trunk/reactos/win32ss/user/ntuser/clipboard.c

Modified: trunk/reactos/win32ss/user/ntuser/clipboard.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/clipbo…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/clipboard.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/clipboard.c	[iso-8859-1] Sun Jun 11 06:53:28 2017
@@ -154,6 +154,7 @@
     }
 
     /* Get information about the bitmap format */
+    pbmi->bmiHeader.biSize = sizeof(bmiBuffer.bmih);
     iResult = GreGetDIBitsInternal(hdc,
                                    hbm,
                                    0,