Check Point Advisories

Mozilla Firefox IonMonkey JIT Compiler Type Confusion (CVE-2019-17026)

Check Point Reference: CPAI-2019-2520
Date Published: 21 Feb 2022
Severity: High
Last Updated: Monday 21 February, 2022
Source:
Industry Reference:CVE-2019-17026
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Mozilla Firefox ESR IonMonkey JIT Compiler prior to 68.4.1
Mozilla Thunderbird IonMonkey JIT Compiler prior to 68.4.1
Mozilla Firefox IonMonkey JIT Compiler prior to 72.0.1
Vulnerability Description A type confusion vulnerability exists in Mozilla Firefox IonMonkey JIT Compiler. 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 Mozilla Firefox IonMonkey JIT Compiler Type Confusion (CVE-2019-17026) 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:  Mozilla Firefox IonMonkey JIT Compiler Type Confusion (CVE-2019-17026)

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