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An update for libtiff is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files. Security Fix(es) : * libtiff: buffer overflow in gif2tiff (CVE-2016-3186) * libtiff: Heap-based buffer overflow in the cpSeparateBufToContigBuf function resulting in a denial of service or possibly code execution (CVE-2018-12900) * libtiff: Out-of-bounds write in tif_jbig.c (CVE-2018-18557) * libtiff: NULL pointer dereference in tif_print.c:TIFFPrintDirectory() causes a denial of service (CVE-2018-7456) * libtiff: heap-based buffer overflow in tif_lzw.c:LZWDecodeCompat() allows for denial of service (CVE-2018-8905) * libtiff: heap-based buffer over-read in TIFFWriteScanline function in tif_write.c (CVE-2018-10779) * libtiff: reachable assertion in TIFFWriteDirectorySec function in tif_dirwrite.c (CVE-2018-10963) * libtiff: Integer overflow in multiply_ms in tools/ppm2tiff.c (CVE-2018-17100) * libtiff: Two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/ pal2rgb.c (CVE-2018-17101) * libtiff: tiff2bw tool failed memory allocation leads to crash (CVE-2018-18661) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.