About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.
Apple security documents reference vulnerabilities by CVE-ID when possible.
Safari 11.0.3
Released January 23, 2018
WebKit
Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.3
Impact: Processing maliciously crafted web content may lead to arbitrary code execution
Description: Multiple memory corruption issues were addressed with improved memory handling.
CVE-2018-4088: Jeonghoon Shin of Theori
CVE-2018-4089: Ivan Fratric of Google Project Zero
CVE-2018-4096: found by OSS-Fuzz
CVE-2018-4147: found by OSS-Fuzz
CVE-2017-7830: Jun Kokatsu (@shhnjk)
Entry updated October 18, 2018