New libtiff packages are available for Slackware 14.2 and -current to fix security issues.

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/libtiff-4.0.7-i586-1_slack14.2.txz: Upgraded.
This release contains security fixes and improvements.
For more information, see:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8127
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8665
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8683
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3622
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3623
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3658
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5321
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5323
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5652
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5875
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9273
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9448
(* Security fix *)
+--------------------------+


Where to find the new packages:
+-----------------------------+

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project!

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/libtiff-4.0.7-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/libtiff-4.0.7-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libtiff-4.0.7-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libtiff-4.0.7-x86_64-1.txz


MD5 signatures:
+-------------+

Slackware 14.2 package:
a0b2f84a88036a4e8e01165d522fdf09 libtiff-4.0.7-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
fccecb6c9e1eea06607442bd6b58e63f libtiff-4.0.7-x86_64-1_slack14.2.txz

Slackware -current package:
a1699ec0db14b6563390f78f9c9bee8e l/libtiff-4.0.7-i586-1.txz

Slackware x86_64 -current package:
9e5280389d6fc4a80fb0c42a026a942c l/libtiff-4.0.7-x86_64-1.txz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg libtiff-4.0.7-i586-1_slack14.2.txz

  Libtiff (SSA:2017-098-01) for Slackware