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Microsoft Disclosed Remote Memory Corruption Flaw in ChromeOS

Microsoft discovered a memory corruption vulnerability in a ChromeOS component that can be triggered remotely, allowing attackers to perform either a denial-of-service (DoS) or, in extreme cases, remote code execution (RCE). Following our D-Bus blog post that focused on Linux, we searched for similar D-Bus patterns on other platforms by auditing D-Bus services and their handler code. After locating a local memory corruption issue, we discovered the vulnerability could be remotely triggered by manipulating audio metadata. Attackers could have lured users into meeting these conditions, such as by simply playing a new song in a browser or from a paired Bluetooth device, or leveraged adversary-in-the-middle (AiTM) capabilities to exploit the vulnerability remotely.

After carefully reviewing the implications, a Microsoft security researcher shared the vulnerability with Google in April 2022 and also reported it with the Chromium bug tracking system. Fixes for the vulnerability, now identified as CVE-2022-2587, were quickly released and have been successfully deployed to end-users. We’d like to thank the Google team and the Chromium community for their professional resolution and collaborative efforts.

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