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Google Patches Dangerous Vulnerabilities in Chrome 57

Google on Wednesday released an update for its Chrome web browser to address five vulnerabilities in the application: one rated Critical and four High risk.

Google on Wednesday released an update for its Chrome web browser to address five vulnerabilities in the application: one rated Critical and four High risk.

Chrome 57.0.2987.133 was released for Windows, Mac, and Linux users just weeks after version 57 of the browser graduated to the stable channel. In addition to bringing several functionality improvements, the previous browser release included the availability of CSS Grid Layout, along with patches for 36 vulnerabilities.

The most severe bug resolved in the new update is a Critical Use after free vulnerability in printing. Tracked as CVE-2017-5055, the issue was discovered by Wadih Matar, who was awarded a $9,337 bounty for the finding, according to Google’s advisory.

The first of the four High risk flaws resolved in this release is a Heap buffer overflow in V8 (CVE-2017-5054), discovered by Nicolas Trippar of Zimperium zLabs and awarded a $3000 bounty. Another was a Bad cast in Blink (CVE-2017-5052), found by JeongHoon Shin and awarded $1000.

The other two flaws included a Use after free in Blink (CVE-2017-5056), discovered by a researcher who opted to remain anonymous, and an Out of bounds memory access in V8 (CVE-2017-5053), found by Team Sniper (Keen Lab and PC Mgr) and reported through ZDI (ZDI-CAN-4587). Google didn’t reveal the bounties paid for these two issues.

A new version of Chrome for Android (57.0.2987.132) was also released this week to address a High risk Use after free vulnerability in Blink (CVE-2017-5056).

In late January, Google released Chrome 56 in the stable channel to resolve 51 vulnerabilities in the browser. Roughly two weeks later, the Internet giant announced that Gmail was dropping support for Chrome version 53 and below, hitting Windows XP and Vista users hard (Chrome 49 was the last browser iteration released for these platforms).

Related: Fake Chrome Font Update Attack Distributes Ransomware

Related: Chrome Users Targeted in Malware Campaign

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

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