(RHSA-2019:2053) Moderate: libtiff security update

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.