CVE-2022-4175 in Chrome
Summary
by MITRE • 11/30/2022
Use after free in Camera Capture in Google Chrome prior to 108.0.5359.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 12/24/2022
The vulnerability identified as CVE-2022-4175 represents a critical use-after-free condition within the camera capture functionality of Google Chrome browsers. This flaw exists in versions prior to 108.0.5359.71 and constitutes a high-severity issue according to Chromium's security classification. The vulnerability manifests when the browser processes crafted HTML content that triggers improper memory management during camera capture operations, creating conditions where freed memory regions can be accessed after deallocation.
The technical implementation of this vulnerability involves memory corruption through improper handling of object references within the camera capture subsystem. When Chrome processes malicious HTML content that attempts to manipulate camera capture functionality, the application fails to properly manage memory allocation and deallocation sequences. This results in a scenario where memory that has been freed is subsequently accessed by the application, leading to heap corruption that can be exploited by remote attackers. The flaw occurs in the browser's rendering engine when processing web content that includes specific JavaScript or HTML elements designed to trigger the problematic code path.
The operational impact of this vulnerability extends beyond simple browser instability, as it provides remote attackers with potential pathways for arbitrary code execution. Attackers can craft malicious web pages that, when loaded in vulnerable Chrome versions, trigger the use-after-free condition and potentially execute malicious code with the privileges of the browser process. This represents a significant threat vector since it allows attackers to compromise user systems simply by visiting malicious websites or being tricked into loading compromised content. The vulnerability's remote exploitability means that no local user interaction is required beyond visiting the malicious page, making it particularly dangerous in phishing campaigns or drive-by download scenarios.
Mitigation strategies for CVE-2022-4175 primarily focus on immediate browser updates to versions 108.0.5359.71 or later where the vulnerability has been patched. Organizations should implement comprehensive patch management protocols to ensure all Chrome installations are updated promptly. Additional protective measures include implementing content security policies that restrict camera access to trusted domains, disabling unnecessary camera permissions for web applications, and deploying network-based intrusion detection systems that can identify and block malicious web content. The vulnerability aligns with CWE-416, which specifically addresses use-after-free conditions in software systems. From an attacker perspective, this vulnerability could map to multiple ATT&CK techniques including initial access through malicious websites, privilege escalation via browser exploitation, and execution of malicious code in user contexts. Organizations should also consider implementing browser hardening measures such as disabling unnecessary browser features, restricting JavaScript execution, and utilizing sandboxing technologies to limit potential exploitation impacts.