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Red Hat Bugzilla – Attachment 149882 Details for
Bug 231694
CVE-2007-1667 XGetPixel() integer overflow
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[patch]
The second patch attached to the Debian bug
xwd_overflow_fix (text/plain), 846 bytes, created by
Matěj Cepl
on 2007-03-12 23:34:29 UTC
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Description:
The second patch attached to the Debian bug
Filename:
MIME Type:
Creator:
Matěj Cepl
Created:
2007-03-12 23:34:29 UTC
Size:
846 bytes
patch
obsolete
>--- a/coders/xwd.c Tue Mar 06 08:34:38 2007 +0100 >+++ b/coders/xwd.c Thu Mar 08 21:13:04 2007 +0100 >@@ -239,6 +239,13 @@ static Image *ReadXWDImage(const ImageIn > ximage->red_mask=header.red_mask; > ximage->green_mask=header.green_mask; > ximage->blue_mask=header.blue_mask; >+ /* Why those are signed ints is beyond me. */ >+ if (ximage->depth < 0 || ximage->width < 0 || ximage->height < 0 || >+ ximage->bitmap_pad < 0 || ximage->bytes_per_line < 0) >+ ThrowReaderException(CorruptImageError,ImproperImageHeader,image); >+ /* Guard against buffer overflow in libX11. */ >+ if (ximage->bits_per_pixel > 32 || ximage->bitmap_unit > 32) >+ ThrowReaderException(CorruptImageError,ImproperImageHeader,image); > status=XInitImage(ximage); > if (status == False) > ThrowReaderException(CorruptImageError,UnrecognizedXWDHeader,image);
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