Saturday, June 15, 2024

Mozilla Firefox Releases 62.0.3 & Security Updates for 2 High Critical Vulnerabilities

Mozilla Firefox Released security updates that cover 2 critical vulnerabilities in Firefox 62.0.3 and Firefox ESR 60.2.2.

One of the remote code execution vulnerability allows a remote attacker to get access to the system and both vulnerabilities are categorized under a critical impact.

Mozilla released Firefox 62.0.3 along with these 2 security patches and users can download the new version here.

Firefox’s automatic update system checks for updates frequently and if it finds a new update, installs it automatically. Firefox users who have blocked automatic updates need to run a manual check for updates here Select Menu > Help > About Firefox.

Vulnerabilities in Firefox 62.0.3

Type confusion in JavaScript: CVE-2018-12386

A Critical vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write.

This leads to remote code execution inside the sandboxed content process when triggered.

This vulnerability was reported by Niklas Baumstark, Samuel Groß, Bruno Keith via Beyond Security’s SecuriTeam.

Memory Address Leak Vulnerability: CVE-2018-12387

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout.

This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process.

It was reported by Bruno Keith, Niklas Baumstark via Beyond Security’s SecuriTeam.

Related Read

Multiple Critical Vulnerabilities Fixed With Firefox 62 and Firefox ESR 60.2


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BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

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