LibTIFF 4.0.3 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact via a crafted TIFF image, as demonstrated by failure of tif_next.c to verify that the BitsPerSample value is 2, and the t2p_sample_lab_signed_to_unsigned function in tiff2pdf.c.
https://www.debian.org/security/2015/dsa-3273
https://security.gentoo.org/glsa/201701-16
https://bugzilla.redhat.com/show_bug.cgi?id=1185815
http://www.securitytracker.com/id/1032760
http://www.securityfocus.com/bid/72352
http://www.conostix.com/pub/adv/CVE-2014-8129-LibTIFF-Out-of-bounds_Reads_and_Writes.txt
http://support.apple.com/kb/HT204942
http://support.apple.com/kb/HT204941
http://rhn.redhat.com/errata/RHSA-2016-1547.html
http://rhn.redhat.com/errata/RHSA-2016-1546.html
http://openwall.com/lists/oss-security/2015/01/24/15
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Jun/msg00001.html