Topic

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.

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.

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.

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

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

CVEs

• CVE-2016-3186
• CVE-2018-7456
• CVE-2018-8905
• CVE-2018-10779
• CVE-2018-10963
• CVE-2018-12900
• CVE-2018-17100
• CVE-2018-17101
• CVE-2018-18557
• CVE-2018-18661

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.7_release_notes/index