Integer overflow in the XMakeImage function in magick/xwindow.c in ImageMagick 6.5.2-8 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted TIFF file, which triggers a buffer overflow. NOTE: some of these details are obtained from third party information.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-1882)