CVE-2023-1234 Overview
CVE-2023-1234 is an inappropriate implementation vulnerability in the Intents component of Google Chrome on Android. This flaw affects Chrome versions prior to 111.0.5563.64 and allows a remote attacker to perform domain spoofing via a crafted HTML page. The vulnerability stems from improper handling of Android Intents, which are messaging objects used to request actions from other app components.
Critical Impact
Remote attackers can exploit this vulnerability to spoof domains, potentially deceiving users into believing they are interacting with legitimate websites when they are actually on malicious pages. This could facilitate phishing attacks and credential theft.
Affected Products
- Google Chrome on Android (versions prior to 111.0.5563.64)
- Google Android (as the underlying platform)
Discovery Timeline
- March 7, 2023 - CVE-2023-1234 published to NVD
- November 21, 2024 - Last updated in NVD database
Technical Details for CVE-2023-1234
Vulnerability Analysis
This vulnerability exists in the Intents handling mechanism within Google Chrome for Android. Android Intents serve as the primary inter-process communication mechanism on the platform, allowing applications to request functionality from other components. The inappropriate implementation in Chrome's Intent handling allows attackers to craft malicious HTML pages that can manipulate how domain information is displayed to users.
When a user navigates to a specially crafted HTML page, the vulnerable Chrome implementation incorrectly processes certain Intent-related operations, resulting in the browser displaying misleading domain information in the address bar or other UI elements. This creates a domain spoofing condition where the displayed URL does not accurately reflect the actual destination.
Root Cause
The root cause of this vulnerability is an inappropriate implementation in how Google Chrome on Android handles Intents. The browser fails to properly validate or sanitize domain-related information when processing Intent-based navigation or display operations. This oversight allows attackers to inject or manipulate domain presentation, causing Chrome to render incorrect domain information to users.
Attack Vector
The attack vector for CVE-2023-1234 is network-based and requires user interaction. An attacker must convince a victim to visit a maliciously crafted HTML page. Once the victim accesses this page, the vulnerability is triggered through the improper Intent handling, causing the browser to display spoofed domain information.
The attack scenario typically involves social engineering to lure victims to the malicious page, which could be distributed through phishing emails, malicious advertisements, or compromised websites. For additional technical details, see the Chrome Bug Report #1404621.
Detection Methods for CVE-2023-1234
Indicators of Compromise
- Unexpected Intent-based navigation events in Chrome logs
- User reports of domain display inconsistencies in the Chrome address bar
- Unusual HTML page requests that contain Intent manipulation attempts
Detection Strategies
- Monitor Chrome browser version across managed Android devices to identify instances running versions prior to 111.0.5563.64
- Implement web filtering to detect and block known malicious domains associated with spoofing attacks
- Review Chrome telemetry for abnormal Intent handling patterns
Monitoring Recommendations
- Enable verbose logging for Chrome on Android devices in enterprise environments
- Deploy mobile device management (MDM) solutions to track browser versions and enforce updates
- Utilize SentinelOne's mobile threat detection capabilities to identify potential exploitation attempts
How to Mitigate CVE-2023-1234
Immediate Actions Required
- Update Google Chrome on all Android devices to version 111.0.5563.64 or later
- Educate users about the risks of visiting untrusted websites and clicking suspicious links
- Implement URL filtering policies to block known malicious domains
Patch Information
Google has addressed this vulnerability in Chrome version 111.0.5563.64. The fix corrects the inappropriate Intent implementation that allowed domain spoofing. Organizations should prioritize updating Chrome on all managed Android devices. For official patch details, refer to the Google Chrome Update Post.
Workarounds
- Enable Chrome's Safe Browsing feature to provide additional protection against malicious pages
- Consider using alternative browsers temporarily on Android devices until updates can be applied
- Restrict access to high-risk websites through corporate web filtering solutions
- Train users to verify domain authenticity through alternative means before entering sensitive information
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
