Check Point Advisories

Apple Webkit Use After Free Code Execution (CVE-2017-13797)

Check Point Reference: CPAI-2017-1064
Date Published: 12 Dec 2017
Severity: Medium
Last Updated: 18 Dec 2017
Source: Project Zero
Industry Reference:CVE-2017-13797
Protection Provided by:

Security Gateway
R80, R77, R76, R75

Who is Vulnerable? iOS 11.1 and earlier versions
Safari 11.0.1 and earlier versions
iCloud 7.1 and earlier versions
iTunes 12.7.1 and earlier versions
tvOS 11.1 and earlier versions
Vulnerability Description A Use After Free vulnerability exists in Apple Webkit in certain Apple products. The vulnerability is due to mishandling objects in the memory. A remote attacker may exploit this vulnerability by enticing target users to open specially 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-2017-13797) 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-2017-13797)

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