Google Chrome & WebRTC Heap Buffer Overflow Vulnerability (CVE-2022-2294) Technical Advisory
Executive & SecOps Summary
SECOPS ASSESSMENTGoogle Chrome prior to version 103.0.5060.114 and other applications utilizing the WebRTC library
A remote attacker can trigger heap corruption and potentially execute arbitrary code or cause a Denial of Service (DoS) via a crafted HTML page
Immediately update Google Chrome and Chromium-based browsers to version 103.0.5060.114 or later
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
To upgrade Google Chrome to the latest secure version on Debian/Ubuntu-based Linux systems, execute the following commands:
# Update package repositories and upgrade Google Chrome
sudo apt-get update && sudo apt-get --only-upgrade install google-chrome-stable -y
# Verify the installed version
google-chrome --version2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict WebRTC behavior using Group Policies or registry modifications. Use the following PowerShell command to restrict WebRTC IP handling on Windows endpoints:
# Restrict WebRTC IP handling policy to mitigate potential exposure
New-Item -Path 'HKLM:\SOFTWARE\Policies\Google\Chrome' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Google\Chrome' -Name 'WebRtcIPHandlingPolicy' -Value 'disable_non_proxied_udp' -PropertyType String -Force3. Log Audit & IoC Verification Commands
You can use the following Bash script to audit endpoints and identify vulnerable installations of Google Chrome:
#!/bin/bash
# Audit script to check for vulnerable Chrome versions
if command -v google-chrome &> /dev/null; then
CURRENT_VER=$(google-chrome --version | awk '{print $3}')
SAFE_VER='103.0.5060.114'
echo '[INFO] Current Chrome version: '$CURRENT_VER
# Compare versions
if [ '$(printf "%s\
%s" "$SAFE_VER" "$CURRENT_VER" | sort -V | head -n1)' != "$SAFE_VER" ]; then
echo '[WARNING] Vulnerable version detected. Upgrade is highly recommended.'
else
echo '[OK] Chrome is running a secure version.'
fi
else
echo '[INFO] Google Chrome is not installed on this system.'
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Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2022-2294) is a heap-based buffer overflow (CWE-787) residing in the WebRTC (Web Real-Time Communication) component of Google Chrome. The root cause lies in insufficient validation of input data boundaries when processing multimedia streams within the WebRTC engine, allowing an attacker to write data past the allocated buffer size on the heap.
2. Exploitation Mechanics & Attack Scenario
An attacker exploits this vulnerability by hosting a specially crafted HTML page or establishing a malicious WebRTC connection. When a victim visits the page, the browser attempts to render and process the incoming media stream. Due to the lack of proper bounds checking, the malicious stream triggers an out-of-bounds write on the heap. This corruption can be leveraged to overwrite critical program control structures, bypass browser sandbox restrictions, and execute arbitrary code in the context of the browser process.
3. Infrastructure & Business Impact
As a vulnerability listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, CVE-2022-2294 has been actively exploited in the wild. Successful exploitation poses a severe threat to enterprise environments, potentially allowing attackers to compromise employee endpoints, steal sensitive session tokens, and establish an initial foothold within the corporate network.
Official Vendor Advisories & References
Heap buffer overflow in WebRTC in Google Chrome prior to 103.0.5060.114 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Frequently Asked SecOps Questions (CVE-2022-2294)
FAQQ1. How critical is CVE-2022-2294 and is it actively exploited in the wild?
CVE-2022-2294 is rated CVSS 8.8 (HIGH) with a 30-day EPSS exploitation probability of 70.8%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2022-2294?
Primary impacted vendors include google, apple, microsoft across chrome, safari, edge, webrtc. Scope summary: Google Chrome versions prior to 103.0.5060.114 across Windows, macOS, and Linux platforms
Q3. What temporary mitigations or workarounds exist for CVE-2022-2294 before patching?
[Mitigation] Immediately update Google Chrome and Chromium-based browsers to version 103.0.5060.114 or later Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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