CVE-2018-9467
📋 TL;DR
CVE-2018-9467 is an incorrect web origin determination vulnerability in Android's UriTest.java that allows attackers to bypass security decisions without user interaction. This affects Android devices running vulnerable versions, potentially enabling cross-origin attacks and security policy violations.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete bypass of web origin security policies allowing cross-origin attacks, data theft, and privilege escalation in web contexts.
Likely Case
WebView-based applications could have their security policies bypassed, potentially leading to cross-site scripting or data leakage.
If Mitigated
Limited impact with proper web security headers, Content Security Policies, and updated Android security patches.
🎯 Exploit Status
No user interaction required, making exploitation straightforward for attackers with web access to vulnerable apps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Patch Level 2018-09-01 and later
Vendor Advisory: https://source.android.com/security/bulletin/2018-09-01
Restart Required: Yes
Instructions:
1. Apply Android security patch 2018-09-01 or later. 2. Update affected Android devices through system updates. 3. Reboot device after update installation.
🔧 Temporary Workarounds
Disable WebView in vulnerable apps
androidConfigure apps to not use WebView components for untrusted content
Implement Content Security Policy
allAdd strict CSP headers to web content served to WebView
🧯 If You Can't Patch
- Isolate vulnerable devices from untrusted networks
- Monitor for suspicious web origin requests in application logs
🔍 How to Verify
Check if Vulnerable:
Check Android Security Patch Level in Settings > About phone > Android security patch levelCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android Security Patch Level is 2018-09-01 or later📡 Detection & Monitoring
Log Indicators:
- Unusual web origin requests in WebView logs
- Cross-origin resource access violations
Network Indicators:
- Suspicious cross-origin requests from Android apps
- Unexpected web traffic from WebView components
SIEM Query:
source="android_logs" AND ("WebView" OR "origin") AND ("violation" OR "bypass")