LibTIFF is vulnerable to an integer overflow. This flaw allows remote attackers to cause a denial of service (application crash) or possibly execute an arbitrary code via a crafted tiff image, which triggers a heap-based buffer overflow.
Credits
Red Hat would like to thank Arie Haenel (Intel ASSERT), Polina Frolov (Intel ASSERT), Yaakov Cohen (Intel ASSERT), and Yocheved Butterman (Intel ASSERT) for reporting this issue.