CVE-2023-36888 Overview
CVE-2023-36888 is a tampering vulnerability affecting Microsoft Edge for Android (Chromium-based). This security flaw allows remote attackers to tamper with data through network-based attacks that require user interaction. The vulnerability stems from improper input validation (CWE-20), which can lead to unauthorized modification of data, potentially compromising the confidentiality, integrity, and availability of the affected mobile browser.
Critical Impact
Attackers can exploit this tampering vulnerability to modify data processed by Microsoft Edge for Android, potentially leading to unauthorized information disclosure, data manipulation, and service disruption on affected mobile devices.
Affected Products
- Microsoft Edge Chromium for Android (all versions prior to security patch)
- Microsoft Edge (Chromium-based) on Android platform
Discovery Timeline
- July 14, 2023 - CVE-2023-36888 published to NVD
- February 28, 2025 - Last updated in NVD database
Technical Details for CVE-2023-36888
Vulnerability Analysis
This tampering vulnerability in Microsoft Edge for Android arises from inadequate input validation mechanisms within the Chromium-based browser. The flaw allows attackers to manipulate data processed by the browser when users interact with malicious content. The attack is network-accessible, meaning exploitation can occur remotely without requiring prior authentication to the target system.
The vulnerability affects the confidentiality, integrity, and availability of the browser, though with limited impact in each area. Successful exploitation requires user interaction, such as visiting a specially crafted website or clicking on a malicious link.
Root Cause
The root cause of CVE-2023-36888 is classified under CWE-20 (Improper Input Validation). The vulnerability exists because the application fails to properly validate or sanitize input data before processing it. This inadequate validation allows attackers to inject or manipulate data in ways the developers did not anticipate, leading to tampering scenarios where the integrity of processed data cannot be guaranteed.
Attack Vector
The attack vector for this vulnerability is network-based, requiring the following conditions:
- Network Access: The attacker must be able to deliver malicious content to the victim over a network connection
- User Interaction: The victim must interact with the malicious content, such as visiting a compromised or attacker-controlled website
- Vulnerable Browser: The target device must be running an unpatched version of Microsoft Edge for Android
The attack does not require the attacker to have any prior privileges on the target system. Once the user interacts with malicious content, the attacker can tamper with data processed by the browser, potentially modifying displayed content, intercepting sensitive information, or causing the browser to behave unexpectedly.
Detection Methods for CVE-2023-36888
Indicators of Compromise
- Unusual network traffic patterns from Microsoft Edge for Android to unknown or suspicious domains
- Browser displaying manipulated or unexpected content during user sessions
- Evidence of modified browser data or configuration files
- Unexpected browser behavior or crashes following visits to specific websites
Detection Strategies
- Monitor mobile device management (MDM) solutions for anomalous Edge browser activity
- Implement network traffic analysis to identify suspicious connections from Android devices
- Review browser logs for signs of data manipulation or unusual processing errors
- Deploy endpoint detection solutions capable of identifying tampering attempts on mobile platforms
Monitoring Recommendations
- Enable comprehensive logging for Microsoft Edge browser activity on managed Android devices
- Monitor for updates to Microsoft Edge for Android and ensure timely patching
- Implement user behavior analytics to detect unusual browsing patterns
- Regularly audit mobile browser configurations for unauthorized changes
How to Mitigate CVE-2023-36888
Immediate Actions Required
- Update Microsoft Edge for Android to the latest version available from the Google Play Store
- Educate users about the risks of visiting untrusted websites or clicking suspicious links
- Review and restrict browser permissions on enterprise-managed Android devices
- Implement web filtering to block access to known malicious domains
Patch Information
Microsoft has released a security update addressing this vulnerability. Administrators and users should update Microsoft Edge for Android to the latest available version. The official security advisory with detailed patch information is available at the Microsoft Security Response Center.
For enterprise environments, ensure that mobile device management (MDM) policies are configured to automatically deploy browser updates or notify users when updates are available.
Workarounds
- Use alternative browsers on Android devices until patching is complete
- Implement network-level filtering to block potentially malicious content
- Restrict browser usage to trusted websites only through MDM policies
- Enable strict site isolation and enhanced security features in Edge browser settings if available
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
