6.8 - RHSA-2019:2053

Problem Description:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

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.

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running applications linked against libtiff must be restarted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1319503 - buffer overflow in gif2tiff 1319666 - CVE-2016-3186 libtiff: buffer overflow in gif2tiff 1556708 - CVE-2018-7456 libtiff: NULL pointer dereference in tif_print.c:TIFFPrintDirectory() causes a denial of service 1559704 - CVE-2018-8905 libtiff: heap-based buffer overflow in tif_lzw.c:LZWDecodeCompat() allows for denial of service 1577311 - CVE-2018-10779 libtiff: heap-based buffer over-read in TIFFWriteScanline function in tif_write.c 1579058 - CVE-2018-10963 libtiff: reachable assertion in TIFFWriteDirectorySec function in tif_dirwrite.c 1595575 - CVE-2018-12900 libtiff: Heap-based buffer overflow in the cpSeparateBufToContigBuf function resulting in a denial of service or possibly code execution 1631069 - CVE-2018-17100 libtiff: Integer overflow in multiply_ms in tools/ppm2tiff.c 1631078 - CVE-2018-17101 libtiff: Two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/pal2rgb.c 1644229 - CVE-2018-18557 libtiff: Out-of-bounds write in tif_jbig.c 1644448 - CVE-2018-18661 libtiff: tiff2bw tool failed memory allocation leads to crash