Google Chrome WebRTC Heap Buffer Overflow Vulnerability (CVE-2023-7024) Security Advisory
Executive & SecOps Summary
SECOPS ASSESSMENTGoogle Chrome and Chromium-based browsers prior to version 120.0.6099.129
A remote attacker can exploit heap corruption via a crafted HTML page, potentially leading to arbitrary code execution (RCE)
Immediately update Google Chrome to the latest stable version (120.0.6099.129 or higher)
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
To remediate this vulnerability, update Google Chrome to version 120.0.6099.129 or later. Use the following commands for package managers in Linux environments:
# Update Google Chrome on Debian/Ubuntu-based systems
sudo apt-get update && sudo apt-get --only-upgrade install google-chrome-stable -y
# Update Google Chrome on RedHat/CentOS/Fedora-based systems
sudo dnf upgrade google-chrome-stable -y2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict WebRTC capabilities or enforce browser policies to mitigate potential attack vectors.
# Example: Restricting WebRTC UDP port range via managed policy file on Linux
sudo mkdir -p /etc/opt/chrome/policies/managed
echo "{
'WebRtcUdpPortRange': '1024-1025'
}" | sudo tee /etc/opt/chrome/policies/managed/webrtc_policy.json3. Log Audit & IoC Verification Commands
Run the following script to audit the currently installed Google Chrome version across your endpoints to identify vulnerable installations.
# Check installed Chrome version on Linux/macOS
if command -v google-chrome &> /dev/null; then
INSTALLED_VERSION=$(google-chrome --version | awk '{print $3}')
echo '[INFO] Current Google Chrome Version: '$INSTALLED_VERSION
else
echo '[WARN] Google Chrome is not detected in the system PATH.'
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Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2023-7024) is a heap buffer overflow (CWE-787) in the WebRTC (Web Real-Time Communication) component of Google Chrome and Chromium. The root cause lies in insufficient boundary validation when WebRTC processes incoming media streams or data channels, allowing an attacker to write data beyond the allocated buffer size in the heap memory.
2. Exploitation Mechanics & Attack Scenario
An attacker can exploit this vulnerability by hosting a specially crafted HTML page containing malicious JavaScript that initiates a WebRTC connection. When a victim visits the page, the browser attempts to parse the malicious WebRTC session description or media packets, triggering the heap overflow. This corrupts adjacent memory blocks, enabling the attacker to hijack the control flow and execute arbitrary code within the context of the browser renderer process.
3. Infrastructure & Business Impact
As a vulnerability listed in the CISA KEV catalog, this flaw is actively being exploited in the wild. In an enterprise environment, successful exploitation can compromise employee endpoints through simple drive-by download vectors, potentially serving as an initial entry point for lateral movement within the corporate network.
Official Vendor Advisories & References
Heap buffer overflow in WebRTC in Google Chrome prior to 120.0.6099.129 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Frequently Asked SecOps Questions (CVE-2023-7024)
FAQQ1. How critical is CVE-2023-7024 and is it actively exploited in the wild?
CVE-2023-7024 is rated CVSS 8.8 (HIGH) with a 30-day EPSS exploitation probability of 6.7%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2023-7024?
Primary impacted vendors include google, chromium across chrome, webrtc. Scope summary: Google Chrome prior to 120.0.6099.129 (Windows, macOS, Linux) and other Chromium-based browsers (e.g., Microsoft Edge, Brave, Opera)
Q3. What temporary mitigations or workarounds exist for CVE-2023-7024 before patching?
[Mitigation] Immediately update Google Chrome to the latest stable version (120.0.6099.129 or higher) Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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