Check Point Advisories

Apple WebKit Use-after-free (CVE-2018-4218)

Check Point Reference: CPAI-2018-0767
Date Published: 25 Jul 2018
Severity: High
Last Updated: 30 Jul 2018
Source: Project zero
Industry Reference:CVE-2018-4218
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable? iOS before 11.4
Safari before 11.1.1
iCloud before 7.5
iTunes before 12.7.5
tvOS before 11.4
watchOS before 4.3.1
Vulnerability Description A use-after-free vulnerability exists in Apple WebKit. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update.For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R76 / R75

  1. In the IPS tab, click Protections and find the Apple WebKit Use-after-free (CVE-2018-4218) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Apple WebKit Use-after-free (CVE-2018-4218)

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