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Chrome 123, Firefox 124 Patch Serious Vulnerabilities

Chrome and Firefox security updates released on Tuesday resolve a critical-severity and multiple high-severity vulnerabilities.

Safari, Chrome, Edge, Firefox security

Google and Mozilla on Tuesday announced web browser security updates that address dozens of vulnerabilities, including one critical-severity and multiple high-severity flaws.

Chrome 123 was released in the stable channel with patches for 12 bugs, seven of which were reported by external researchers.

The most severe of these is CVE-2024-2625, a high-severity object lifecycle issue in the V8 JavaScript and WebAssembly engine, Google notes in its advisory.

The browser update also resolves five medium-severity vulnerabilities in components such as Swiftshader, Canvas, Downloads, and iOS, and one low-severity security hole in iOS.

According to Google, it paid out $22,000 in bug bounty rewards to the reporting researchers. However, the final amount could be much higher, as the bounty reward for the high-severity flaw has yet to be determined.

The latest Chrome iteration is now rolling out as version 123.0.6312.58 for Linux and versions 123.0.6312.58/.59 for Windows and macOS.

Mozilla released Firefox 124 with patches for 12 security defects, the most severe of which are critical-severity memory safety bugs collectively tracked as CVE-2024-2615. Some of these flaws, Mozilla says, could potentially be exploited for arbitrary code execution.

Five of the vulnerabilities are high-severity issues leading to sandbox escape, the creation of invalid WASM values, arbitrary code execution on Armv7-A systems, and out-of-bounds writes. Firefox 124 also resolves five medium-severity bugs and one low-severity flaw.

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On Tuesday, Mozilla also announced the release of Thunderbird 115.9 and Firefox ESR 115.9, each with patches for 10 vulnerabilities, including nine that were addressed in Firefox 124. The tenth is a high-severity improper handling of out-of-memory conditions in ICU.

Google and Mozilla make no mention of any of these vulnerabilities being exploited in the wild.

Related: Chrome 122, Firefox 123 Patch High-Severity Vulnerabilities

Related: Chrome 121 Patches 17 Vulnerabilities

Related: Google Patches Six Vulnerabilities With First Chrome Update of 2024

Written By

Ionut Arghire is an international correspondent for SecurityWeek.


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