Check Point Advisories

Apple WebKit Use After Free Code Execution (CVE-2017-13791)

Check Point Reference: CPAI-2017-1025
Date Published: 28 Nov 2017
Severity: Medium
Last Updated: 28 Nov 2017
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable? iOS before 11.1
Safari before 11.0.1
iCloud before 7.1 on Windows
iTunes before 12.7.1 on Windows
tvOS before 11.1
Vulnerability Description A remote code execution vulnerability has been discovered in Apple WebKit. The vulnerability is due to the way the vulnerable application handles objects in memory. A remote attacker could exploit this issue by enticing the target user to open a maliciously crafted web page.

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 Code Execution (CVE-2017-13791) 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 Code Execution (CVE-2017-13791)