Off-by-one error in the ReadBlobString function in blob.c in ImageMagick before 6.3.5-9 allows context-dependent attackers to execute arbitrary code via a crafted image file, which triggers the writing of a '\0' character to an out-of-bounds address.
Sign extension error in the ReadDIBImage function in ImageMagick before 6.3.5-9 allows context-dependent attackers to execute arbitrary code via a crafted width value in an image file, which triggers an integer overflow and a heap-based buffer overflow.
Multiple integer overflows in ImageMagick before 6.2.9 allows user-assisted attackers to execute arbitrary code via crafted Sun Rasterfile (bitmap) images that trigger heap-based buffer overflows.
ImageMagick before 6.2.4.2-r1 allows local users in the portage group to increase privileges via a shared object in the Portage temporary build directory, which is added to the search path allowing objects in it to be loaded at runtime.