CVE-2022-44702: Microsoft Terminal RCE Vulnerability

CVE-2022-44702 Overview

CVE-2022-44702 is a remote code execution vulnerability affecting Microsoft Windows Terminal, a modern terminal application for Windows. This vulnerability allows an attacker to execute arbitrary code on a target system when a user is tricked into opening a specially crafted file or interacting with malicious content. The vulnerability requires local access and user interaction to exploit successfully.

Critical Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code with the same privileges as the current user, potentially leading to full system compromise if the user has administrative privileges.

Affected Products

• Microsoft Terminal (all versions prior to patched release)
• Microsoft Windows 10
• Microsoft Windows 11

Discovery Timeline

• 2022-12-13 - CVE-2022-44702 published to NVD
• 2025-01-02 - Last updated in NVD database

Technical Details for CVE-2022-44702

Vulnerability Analysis

This remote code execution vulnerability in Windows Terminal stems from improper handling of user-supplied input. The vulnerability requires local access to the system and user interaction—meaning an attacker must convince a user to open a malicious file or click on a specially crafted link. Once triggered, the vulnerability allows the attacker to execute arbitrary code in the context of the current user.

The attack requires no special privileges to initiate, but the impact is significant as it affects confidentiality, integrity, and availability of the system. If the compromised user has elevated privileges, the attacker gains corresponding access to the system.

Root Cause

Microsoft has classified this vulnerability under "NVD-CWE-noinfo," indicating that specific technical details about the root cause have not been publicly disclosed. Based on the vulnerability type (Remote Code Execution), the issue likely involves improper input validation or insufficient sanitization of data processed by Windows Terminal, allowing maliciously crafted input to be interpreted as executable code.

Attack Vector

The attack vector for CVE-2022-44702 is local, requiring the attacker to have some form of access to the target system or the ability to deliver a malicious payload to the user. The attack scenario typically involves social engineering tactics to convince a user to:

1. Open a specially crafted file that exploits the vulnerability
2. Interact with malicious terminal sequences or commands
3. Execute content from an untrusted source within Windows Terminal

The vulnerability does not require elevated privileges to exploit, but does require user interaction, making social engineering a key component of any attack chain.

Detection Methods for CVE-2022-44702

Indicators of Compromise

• Unexpected child processes spawned by WindowsTerminal.exe
• Suspicious files recently opened through Windows Terminal with unusual extensions or content
• Anomalous network connections initiated by the Windows Terminal process
• Crash dumps or error logs indicating memory corruption in Windows Terminal

Detection Strategies

• Monitor Windows Terminal process (WindowsTerminal.exe) for suspicious child process creation
• Implement endpoint detection rules to flag unusual code execution patterns originating from terminal applications
• Deploy application whitelisting to restrict executables launched from terminal contexts
• Enable Windows Defender Attack Surface Reduction (ASR) rules for Office and terminal applications

Monitoring Recommendations

• Enable enhanced logging for Windows Terminal activity via Windows Event logs
• Configure SIEM alerts for suspicious process chains involving WindowsTerminal.exe
• Monitor for unusual file access patterns by Windows Terminal processes
• Review PowerShell and command-line logging for evidence of exploitation attempts

How to Mitigate CVE-2022-44702

Immediate Actions Required

• Update Windows Terminal to the latest version available through Microsoft Store or GitHub
• Apply all pending Windows security updates from Microsoft
• Educate users about the risks of opening files from untrusted sources
• Restrict Windows Terminal usage to authorized personnel where possible

Patch Information

Microsoft has released a security update to address this vulnerability. Organizations should apply the patch immediately through their standard update mechanisms. For detailed patch information, consult the Microsoft Security Advisory CVE-2022-44702 or the Microsoft CVE-2022-44702 Update Guide.

SentinelOne Singularity™ provides protection against exploitation attempts through behavioral AI detection and real-time monitoring of process execution patterns. Organizations using SentinelOne can leverage Deep Visibility™ to hunt for potential indicators of compromise related to this vulnerability.

Workarounds

• Avoid opening files from untrusted sources in Windows Terminal until patches are applied
• Use Windows Defender Application Control (WDAC) to restrict code execution
• Configure Windows Terminal with restricted execution policies where possible
• Consider using alternative terminal emulators in highly sensitive environments until patching is complete

# Verify Windows Terminal version (run in PowerShell)
Get-AppxPackage -Name Microsoft.WindowsTerminal | Select-Object Name, Version

# Check for available updates through winget
winget upgrade Microsoft.WindowsTerminal