Check Point Advisories

Apple iOS Use After Free (CVE-2021-30858)

Check Point Reference: CPAI-2021-1089
Date Published: 21 Feb 2022
Severity: High
Last Updated: Monday 21 February, 2022
Source:
Industry Reference:CVE-2021-30858
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Apple iOS prior to 14.8
Apple iPadOS prior to 14.8
Apple macOS Big Sur prior to 11.6
Vulnerability Description A use after free vulnerability exists in Apple iOS. 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 R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Apple iOS Use After Free (CVE-2021-30858) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Client Enforcement Violation.
Attack Information:  Apple iOS Use After Free (CVE-2021-30858)

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