CVE-2025-12729

4.2 MEDIUM

📋 TL;DR

This vulnerability allows attackers to spoof UI elements in Chrome's address bar (Omnibox) on Android devices by tricking users into performing specific gestures on a malicious webpage. It affects Android users running Chrome versions before 142.0.7444.137. Attackers could potentially mislead users about website authenticity or security status.

💻 Affected Systems

Products:
  • Google Chrome for Android
Versions: Versions prior to 142.0.7444.137
Operating Systems: Android
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects Chrome on Android, not desktop versions. Requires user interaction with specific UI gestures on a crafted webpage.

📦 What is this software?

Chrome by Google

Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...

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⚠️ Risk & Real-World Impact

🔴

Worst Case

Users could be tricked into entering sensitive information on fake login pages, approving malicious transactions, or bypassing security warnings due to convincing UI spoofing.

🟠

Likely Case

Attackers create convincing phishing pages that appear legitimate by manipulating the address bar display, potentially stealing credentials or tricking users into unwanted actions.

🟢

If Mitigated

With updated Chrome and user awareness training, impact is limited as users can verify URLs and avoid suspicious gestures on untrusted sites.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: MEDIUM

Requires user interaction (specific gestures) and a crafted HTML page. No public exploit code has been disclosed as of the advisory.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 142.0.7444.137 and later

Vendor Advisory: https://chromereleases.googleblog.com/2025/11/stable-channel-update-for-desktop.html

Restart Required: Yes

Instructions:

1. Open Google Play Store on Android device. 2. Search for 'Chrome'. 3. If update is available, tap 'Update'. 4. After update completes, restart Chrome.

🔧 Temporary Workarounds

Disable JavaScript

android

Prevents the crafted HTML page from executing malicious scripts that trigger the vulnerability.

chrome://settings/content/javascript > Toggle off

Use Desktop Mode

android

Switch Chrome to desktop mode which may not be affected by the same UI implementation.

Tap menu > Desktop site

🧯 If You Can't Patch

  • Educate users to avoid performing unusual gestures on unfamiliar websites and to verify URLs before entering sensitive information.
  • Implement network filtering to block known malicious domains that may host exploit pages.

🔍 How to Verify

Check if Vulnerable:

Open Chrome on Android, go to Settings > About Chrome, check if version is below 142.0.7444.137.

Check Version:

chrome://version

Verify Fix Applied:

After updating, confirm Chrome version is 142.0.7444.137 or higher in Settings > About Chrome.

📡 Detection & Monitoring

Log Indicators:

  • Unusual user interaction patterns with Chrome on Android devices
  • Access to domains with known phishing or malicious content

Network Indicators:

  • HTTP requests to domains hosting crafted HTML pages with unusual parameters
  • Increased traffic to newly registered or suspicious domains

SIEM Query:

source="chrome_android_logs" AND (event="unusual_gesture" OR url="*malicious-domain*" )

🔗 References

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