CVE-2024-0809 in Chrome
Summary
by MITRE • 01/24/2024
Inappropriate implementation in Autofill in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to bypass Autofill restrictions via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 02/17/2024
The vulnerability identified as CVE-2024-0809 represents a weakness in Google Chrome's Autofill implementation that could potentially be exploited by remote attackers to circumvent security controls designed to protect user data. This issue affects Chrome versions prior to 121.0.6167.85 and is classified with a low severity rating by Chromium security standards, yet it still presents a meaningful risk to user privacy and data protection mechanisms. The flaw specifically relates to how Chrome handles Autofill restrictions when processing crafted HTML content, creating a potential pathway for attackers to access or manipulate sensitive information that should normally be protected by the browser's security policies.
The technical implementation flaw occurs within Chrome's Autofill subsystem where the browser fails to properly validate or enforce restrictions when encountering specially crafted HTML pages. This allows attackers to construct malicious web pages that can bypass the normal security boundaries that typically prevent Autofill from operating in certain contexts or with specific data types. The vulnerability essentially enables an attacker to manipulate the browser's Autofill behavior through carefully constructed HTML elements that exploit gaps in the validation logic. This could potentially allow unauthorized access to saved login credentials, personal information, or other data that users expect to be protected by Chrome's Autofill security mechanisms.
The operational impact of this vulnerability extends beyond simple privacy concerns as it could enable attackers to collect sensitive user information through seemingly benign web pages. When users navigate to compromised websites, the malicious HTML could trigger Autofill functionality in ways that were not intended by the browser developers, potentially leading to data leakage or unauthorized access to stored credentials. The low severity classification does not diminish the potential for abuse, as attackers can leverage this bypass to perform reconnaissance or gather information that could be used in subsequent attacks. The vulnerability is particularly concerning because it operates at the browser level where users typically trust the security of their browser's built-in protection mechanisms.
Mitigation strategies for CVE-2024-0809 primarily focus on updating to the patched version of Google Chrome 121.0.6167.85 or later, which contains the necessary fixes to address the Autofill implementation flaw. Organizations should prioritize updating their Chrome installations across all systems to prevent exploitation of this vulnerability. Security teams should also consider implementing additional monitoring for suspicious Autofill behavior or unusual data access patterns when users interact with web content. While the vulnerability is classified as low severity, the potential for data exposure makes proactive remediation essential. The fix likely involves strengthening input validation within the Autofill subsystem and ensuring that all HTML content is properly evaluated before triggering any Autofill functionality, aligning with security best practices for preventing unauthorized data access through browser-based attacks.
This vulnerability aligns with CWE-200, which covers "Information Exposure," and potentially CWE-352, "Cross-Site Request Forgery," as it involves unauthorized access to user data through web-based manipulation. From an ATT&CK framework perspective, it relates to T1531, "Account Access Removal," and T1071.001, "Application Layer Protocol: Web Protocols," as it involves manipulating browser protocols to gain unauthorized access to user information. The vulnerability demonstrates how seemingly minor implementation flaws in browser security features can create pathways for attackers to compromise user privacy and data protection mechanisms that are fundamental to secure computing environments.