CVE-2025-0436 Overview
CVE-2025-0436 is an integer overflow vulnerability in the Skia graphics library used by Google Chrome. This vulnerability exists in Chrome versions prior to 132.0.6834.83 and allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. Skia is the core 2D graphics library that Chrome uses for rendering content, making this a significant attack surface.
Critical Impact
Remote attackers can leverage this integer overflow to trigger heap corruption, potentially leading to arbitrary code execution with the privileges of the Chrome browser process.
Affected Products
- Google Chrome versions prior to 132.0.6834.83
- All platforms running vulnerable Chrome versions (Windows, macOS, Linux)
- Chromium-based browsers that incorporate the vulnerable Skia library
Discovery Timeline
- January 15, 2025 - CVE-2025-0436 published to NVD
- April 21, 2025 - Last updated in NVD database
Technical Details for CVE-2025-0436
Vulnerability Analysis
This vulnerability stems from an integer overflow condition within the Skia graphics rendering library. Skia is responsible for rendering most visual content in Chrome, including images, text, and complex graphics operations. When processing specially crafted graphical content embedded in an HTML page, the integer overflow can cause incorrect memory allocation calculations, leading to heap buffer corruption.
The attack requires user interaction—specifically, a victim must navigate to a malicious web page containing the crafted content. Once triggered, the integer overflow can corrupt heap memory structures, potentially allowing an attacker to achieve arbitrary code execution within the context of the Chrome browser process.
Root Cause
The root cause is an integer overflow condition in Skia's rendering pipeline (CWE-472). When performing arithmetic operations related to graphics buffer sizes or dimensions, certain inputs can cause integer values to wrap around, resulting in smaller-than-expected memory allocations. Subsequent write operations then exceed the allocated buffer boundaries, corrupting adjacent heap memory.
Attack Vector
The attack is network-based and requires user interaction. An attacker must:
- Host or inject malicious HTML content containing crafted graphics elements designed to trigger the integer overflow
- Convince a victim to visit the malicious page or view the content
- The crafted content causes Skia to perform calculations that result in an integer overflow
- The resulting heap corruption can be leveraged for further exploitation
The vulnerability is triggered through crafted HTML page rendering. When Skia processes the malicious graphical content, the integer overflow occurs during size calculations, leading to an undersized heap allocation. Subsequent rendering operations write beyond the allocated buffer, corrupting heap metadata and potentially adjacent objects. For technical implementation details, refer to the Chromium Issue Tracker Entry.
Detection Methods for CVE-2025-0436
Indicators of Compromise
- Chrome crash reports indicating heap corruption in Skia-related functions
- Unexpected Chrome renderer process terminations when visiting specific websites
- Memory access violation errors originating from graphics rendering operations
- Suspicious HTML pages with abnormally large or malformed graphics elements
Detection Strategies
- Monitor browser version inventories to identify unpatched Chrome installations below version 132.0.6834.83
- Deploy endpoint detection rules that alert on unusual Chrome crash patterns related to renderer processes
- Implement web traffic inspection to identify potentially malicious HTML content targeting graphics rendering
- Use memory protection tools to detect heap corruption attempts in browser processes
Monitoring Recommendations
- Enable crash reporting in Chrome enterprise deployments to centrally collect and analyze crash data
- Monitor network traffic for suspicious patterns associated with exploitation attempts
- Implement browser isolation solutions to contain potential exploitation attempts
- Review endpoint telemetry for anomalous Chrome process behavior
How to Mitigate CVE-2025-0436
Immediate Actions Required
- Update Google Chrome to version 132.0.6834.83 or later immediately
- Enable automatic Chrome updates across all managed endpoints
- Audit browser versions across the organization to identify vulnerable installations
- Consider browser isolation for high-risk users until patching is complete
Patch Information
Google has released a security patch in Chrome version 132.0.6834.83 that addresses this integer overflow vulnerability. The patch was announced via the Google Chrome Stable Update. Organizations should prioritize updating all Chrome installations to this version or later.
To verify the current Chrome version, navigate to chrome://settings/help or check via command line. Enterprise administrators can use group policy or Chrome Enterprise management tools to enforce the update.
Workarounds
- If immediate patching is not possible, consider using an alternative browser temporarily for sensitive operations
- Implement network-level content filtering to block access to untrusted websites
- Enable site isolation features in Chrome to limit the impact of renderer compromises
- Use browser extensions that block potentially malicious content types
# Verify Chrome version on Linux/macOS
google-chrome --version
# Check for updates via command line (Windows)
# Navigate to chrome://settings/help in the browser
# Enterprise deployment - Force Chrome update via policy
# Configure AutoUpdateCheckPeriodMinutes and UpdateDefault policies
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
