CVE-2024-7005: Google Chrome Auth Bypass Vulnerability

CVE-2024-7005 Overview

CVE-2024-7005 is an insufficient validation of untrusted input vulnerability in the Safe Browsing component of Google Chrome prior to version 127.0.6533.72. This security flaw allows a remote attacker who convinces a user to engage in specific UI gestures to bypass discretionary access control via a malicious file. The vulnerability stems from improper input validation (CWE-20) and reliance on untrusted inputs in a security decision (CWE-807).

Critical Impact

A remote attacker can bypass Chrome's Safe Browsing protections through social engineering, potentially allowing malicious files to evade security controls that normally protect users from dangerous downloads.

Affected Products

• Google Chrome versions prior to 127.0.6533.72
• Google Chrome desktop browser across all supported platforms
• Chromium-based browsers using the affected Safe Browsing component

Discovery Timeline

• July 23, 2024 - Google releases security patch in Chrome 127.0.6533.72
• August 6, 2024 - CVE-2024-7005 published to NVD
• August 7, 2024 - Last updated in NVD database

Technical Details for CVE-2024-7005

Vulnerability Analysis

This vulnerability affects Google Chrome's Safe Browsing feature, which is designed to protect users from malicious websites, downloads, and extensions. The flaw exists in how the browser validates untrusted input when processing file downloads and related security decisions.

The weakness allows an attacker to craft a malicious file that, when combined with specific user interface interactions, can bypass the discretionary access control mechanisms that Chrome employs to warn users about potentially dangerous content. This represents a failure in the defense-in-depth strategy that Safe Browsing provides.

While the vulnerability requires user interaction through specific UI gestures, the network-accessible attack vector means that any user visiting a malicious website could potentially be targeted. The integrity impact allows attackers to circumvent security warnings that would normally alert users to malicious content.

Root Cause

The root cause is attributed to CWE-20 (Improper Input Validation) and CWE-807 (Reliance on Untrusted Inputs in a Security Decision). The Safe Browsing component fails to adequately validate input data before making security-critical decisions about file safety. This insufficient validation allows specially crafted malicious content to be processed in a way that bypasses the intended security controls.

Attack Vector

The attack requires a network-based approach where an attacker must convince a user to visit a malicious website or interact with malicious content. The exploitation flow involves:

1. Attacker hosts or distributes a specially crafted malicious file
2. User is directed to the malicious content through social engineering
3. User performs specific UI gestures (such as clicking through dialogs or interacting with download prompts)
4. The insufficient input validation allows the malicious file to bypass Safe Browsing protections
5. Discretionary access control is circumvented, potentially exposing the user to the malicious file without adequate warnings

The vulnerability mechanism involves the Safe Browsing component's handling of file metadata and security decisions. When processing downloads, the component should validate all inputs to ensure that security warnings are appropriately displayed. The flaw allows an attacker to manipulate these inputs in a way that suppresses or bypasses these protective measures. For full technical details, refer to the Chromium Issue Tracker Entry.

Detection Methods for CVE-2024-7005

Indicators of Compromise

• Unusual Safe Browsing bypass events in Chrome browser logs
• Downloads completing without expected security warnings for suspicious file types
• User reports of missing malicious file warnings that should have appeared
• Anomalous user interaction patterns with download dialogs

Detection Strategies

• Monitor Chrome browser version across the enterprise to identify instances running versions prior to 127.0.6533.72
• Implement endpoint detection rules that flag Safe Browsing warning bypasses
• Review download activity logs for files that should have triggered security warnings but did not
• Deploy SentinelOne agents to detect post-exploitation activity if malicious files are executed

Monitoring Recommendations

• Enable enhanced Safe Browsing logging on managed Chrome deployments
• Monitor for unusual file download patterns that bypass typical security prompts
• Track Chrome version compliance across the organization using asset management tools
• Implement browser policy enforcement to ensure automatic updates are enabled

How to Mitigate CVE-2024-7005

Immediate Actions Required

• Update Google Chrome to version 127.0.6533.72 or later immediately
• Verify all managed Chrome installations have received the security update
• Enable automatic updates for Chrome if not already configured
• Remind users to be cautious about engaging with unfamiliar download prompts or UI elements

Patch Information

Google has addressed this vulnerability in Chrome version 127.0.6533.72 released on July 23, 2024. The fix improves input validation within the Safe Browsing component to prevent bypass of discretionary access controls. Organizations should deploy this update through their standard browser management channels.

For detailed information about this security update, refer to the Google Chrome Desktop Update announcement.

Workarounds

• If immediate patching is not possible, consider temporarily restricting access to untrusted websites
• Implement web filtering at the network level to block known malicious domains
• Enable Chrome's Enhanced Safe Browsing mode for additional protection layers
• Educate users about the risks of interacting with suspicious download prompts

# Verify Chrome version on Linux/macOS
google-chrome --version
# Expected output: Google Chrome 127.0.6533.72 or higher

# Force Chrome update check via command line (Windows)
# Navigate to chrome://settings/help in browser to trigger update

# Enterprise deployment - check Chrome version via policy
# Deploy GPO or MDM policies to enforce minimum Chrome version 127.0.6533.72