Published: 13 February 2012
ImageMagick 6.7.5-7 and earlier allows remote attackers to cause a denial of service (infinite loop and hang) via a crafted image whose IFD contains IOP tags that all reference the beginning of the IDF.
CVSS 3 base score: 5.5
r6998 is the fix for CVE-2012-1186 which was assigned as an incomplete fix for this issue (see oss-sec for more information).
see fixes in CVE-2012-0247