The MITRE CVE dictionary describes this issue as:
Integer overflow in the ReadDirectory function in tiffdump.c in tiffdump in LibTIFF before 3.9.5 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted TIFF file containing a directory data structure with many directory entries.
Find out more about CVE-2010-4665 from the
MITRE CVE dictionary dictionary and
This flaw has already been fixed in Red Hat Enterprise Linux 4 and 5 by a patch included in RHSA-2010:0519.