CVE-2022-0452: Google Chrome Use After Free Vulnerability

CVE-2022-0452 Overview

CVE-2022-0452 is a use after free vulnerability in the Safe Browsing component of Google Chrome prior to version 98.0.4758.80. This memory corruption flaw allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page, enabling code execution outside of Chrome's security sandbox.

Critical Impact

This vulnerability enables sandbox escape, allowing attackers to break out of Chrome's security boundaries and potentially execute arbitrary code with elevated privileges on the underlying system.

Affected Products

• Google Chrome versions prior to 98.0.4758.80
• All platforms running vulnerable Google Chrome versions (Windows, macOS, Linux)
• Chromium-based browsers that incorporate the affected Safe Browsing component

Discovery Timeline

• 2022-04-05 - CVE-2022-0452 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2022-0452

Vulnerability Analysis

This vulnerability is classified as CWE-416 (Use After Free), a dangerous memory corruption issue that occurs when a program continues to reference memory after it has been freed. In the context of Chrome's Safe Browsing feature, this flaw creates an opportunity for attackers to manipulate freed memory regions and potentially hijack program execution flow.

The Safe Browsing component is a critical security feature in Chrome designed to protect users from malicious websites and downloads. Ironically, a vulnerability in this protective mechanism can be leveraged by attackers to compromise the browser's security model entirely. The sandbox escape capability makes this particularly severe, as Chrome's sandbox is a core defense mechanism that isolates web content from the operating system.

Root Cause

The vulnerability stems from improper memory management within the Safe Browsing component. When certain objects are deallocated during Safe Browsing operations, references to those objects may persist and be subsequently used. This creates a use after free condition where the application attempts to access memory that has already been returned to the heap.

In use after free scenarios, attackers can potentially reallocate the freed memory with attacker-controlled data, leading to type confusion or control flow hijacking when the dangling pointer is later dereferenced.

Attack Vector

The attack is network-based and requires user interaction in the form of visiting a malicious webpage. An attacker would craft a specially designed HTML page that triggers the vulnerable code path in the Safe Browsing component. The exploitation flow typically involves:

1. Victim navigates to an attacker-controlled webpage
2. The malicious page triggers Safe Browsing functionality in a way that causes the use after free condition
3. Attacker-controlled data is placed in the freed memory region
4. When the dangling pointer is accessed, the attacker gains control of execution
5. The sandbox escape is achieved, allowing code execution outside Chrome's sandbox

The specific technical details of the exploitation technique are documented in the Chromium Bug Report #1284584.

Detection Methods for CVE-2022-0452

Indicators of Compromise

• Unusual Chrome process behavior including unexpected child process creation
• Memory access violations or crash dumps indicating use after free conditions
• Anomalous network connections originating from Chrome processes after visiting suspicious sites
• Evidence of code execution outside Chrome's sandbox boundaries

Detection Strategies

• Monitor for Chrome crash reports indicating memory corruption in Safe Browsing components
• Implement endpoint detection rules for suspicious process chains originating from Chrome
• Deploy browser-level telemetry to detect exploitation attempts targeting Safe Browsing
• Use memory protection tools to detect heap corruption patterns

Monitoring Recommendations

• Enable Chrome's built-in crash reporting and monitor for Safe Browsing-related crashes
• Implement network monitoring to detect connections to known malicious infrastructure
• Deploy SentinelOne Singularity Platform for real-time detection of sandbox escape attempts
• Monitor system logs for unexpected privilege escalation following Chrome execution

How to Mitigate CVE-2022-0452

Immediate Actions Required

• Update Google Chrome to version 98.0.4758.80 or later immediately
• Enable automatic updates in Chrome to ensure timely patching of future vulnerabilities
• Review browser configurations and ensure Safe Browsing protection remains enabled after patching
• Consider using browser isolation technologies for high-risk browsing activities

Patch Information

Google has addressed this vulnerability in Chrome version 98.0.4758.80, released in February 2022. The fix resolves the memory management issue in the Safe Browsing component that allowed the use after free condition to occur.

Administrators should verify Chrome versions across their environment and ensure all instances are updated. The official security advisory with complete details is available at the Google Chrome Stable Update blog.

Workarounds

• Temporarily disable Safe Browsing if updating is not immediately possible (not recommended for extended periods)
• Use alternative browsers with current security patches for sensitive activities
• Implement network-level filtering to block known malicious domains
• Deploy endpoint protection solutions capable of detecting sandbox escape attempts

# Verify Chrome version on Linux/macOS
google-chrome --version

# On Windows, check version via PowerShell
(Get-Item "C:\Program Files\Google\Chrome\Application\chrome.exe").VersionInfo.FileVersion

# Force Chrome update check
# Navigate to chrome://settings/help in the browser