CVE-2022-4922 in Chrome
Summary
by MITRE • 07/29/2023
Inappropriate implementation in Blink in Google Chrome prior to 99.0.4844.51 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 08/23/2023
The vulnerability identified as CVE-2022-4922 represents a significant security flaw within the Blink rendering engine that powers Google Chrome and Chromium-based browsers. This issue stems from an inappropriate implementation that fails to properly validate or handle specific HTML elements, creating a pathway for malicious actors to manipulate the browser's user interface. The vulnerability specifically affects versions of Chrome prior to 99.0.4844.51, indicating that it was a relatively recent flaw that had not yet been patched when the vulnerability was discovered. The security severity rating of Medium by Chromium's classification system suggests that while the flaw does not immediately lead to arbitrary code execution or complete system compromise, it still presents a meaningful risk to user security and privacy.
The technical nature of this vulnerability allows for UI spoofing attacks, which means that a remote attacker can craft a malicious HTML page that manipulates the browser's interface in ways that deceive users. This typically involves creating deceptive visual elements that can mimic legitimate browser components or website interfaces, potentially leading users to unknowingly interact with malicious content or provide sensitive information. The flaw exploits the way Blink processes certain HTML constructs, likely involving elements such as iframes, popups, or other interface manipulation mechanisms that should normally be restricted or properly validated. This type of vulnerability falls under the category of user interface deception attacks that can bypass normal security boundaries and user awareness mechanisms.
The operational impact of this vulnerability extends beyond simple visual deception, as it can be leveraged as a precursor to more serious attacks. Users who fall victim to UI spoofing may be tricked into entering credentials on fake login pages, clicking on malicious links, or performing actions that appear legitimate but actually compromise their security. The attack surface is particularly concerning because it targets the fundamental user interface layer that users trust and interact with daily. This vulnerability can be exploited through various attack vectors including phishing campaigns, malicious websites, or compromised legitimate sites that have been injected with malicious code. The ability to manipulate the browser's appearance creates a powerful attack primitive that can be combined with other techniques to create more sophisticated and convincing attacks.
Mitigation strategies for CVE-2022-4922 focus primarily on updating to the patched version of Chrome or Chromium where the vulnerability has been addressed. Organizations should ensure that all browser installations are updated to version 99.0.4844.51 or later, as this represents the first version that contains the necessary security fixes. Browser vendors and system administrators should implement robust update policies to ensure timely deployment of security patches. Additionally, users should be educated about the risks of UI spoofing attacks and trained to recognize suspicious behavior in browser interfaces, though this should not be relied upon as the primary defense mechanism. Network security controls such as web application firewalls and content filtering systems may provide additional layers of protection, though they are not foolproof against this type of attack. The vulnerability also highlights the importance of maintaining up-to-date browser security practices and the need for continuous monitoring of security advisories. This issue aligns with attack patterns documented in the attack tree model where UI deception serves as a foundational technique for more complex exploitation chains, making it a critical vulnerability to address promptly.