New mozilla-firefox 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/mozilla-firefox-60.4.0esr-i686-1_slack14.2.txz: Upgraded.
This release contains security fixes and improvements.
For more information, see:
https://www.mozilla.org/security/known-vulnerabilities/firefoxESR.html
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-17466
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18492
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18494
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18498
https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-12405
(* 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/mozilla-firefox-60.4.0esr-i686-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/mozilla-firefox-60.4.0esr-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-firefox-60.4.0esr-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/xap/mozilla-firefox-60.4.0esr-x86_64-1.txz


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

Slackware 14.2 package:
01fc1f59b80c29dbb901552d8b0ec41b mozilla-firefox-60.4.0esr-i686-1_slack14.2.txz

Slackware x86_64 14.2 package:
17521ad9bda9ac063c1bf9996e08bc48 mozilla-firefox-60.4.0esr-x86_64-1_slack14.2.txz

Slackware -current package:
8bcc85863ba42906f71d9e63927df710 xap/mozilla-firefox-60.4.0esr-i686-1.txz

Slackware x86_64 -current package:
acde0468c7113e753c03cc26818cd5b1 xap/mozilla-firefox-60.4.0esr-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg mozilla-firefox-60.4.0esr-i686-1_slack14.2.txz

  Mozilla-Firefox (SSA:2018-345-01) Update for Slackware