CVE-2022-50929: Connectify Hotspot Privilege Escalation

CVE-2022-50929 Overview

CVE-2022-50929 is an unquoted service path vulnerability affecting Connectify Hotspot 2018. The vulnerability exists in the ConnectifyService executable, which is installed with an unquoted service path at C:\Program Files (x86)\Connectify\ConnectifyService.exe. This configuration flaw allows local attackers to potentially execute arbitrary code and escalate privileges on affected systems.

When Windows processes an unquoted service path containing spaces, it attempts to locate the executable by parsing the path at each space character. An attacker with write access to directories in the path can place a malicious executable (such as Program.exe or Connectify.exe) that will be executed instead of the legitimate service, running with the privileges of the service account.

Critical Impact

Local attackers can exploit this unquoted service path vulnerability to execute arbitrary code with elevated privileges, potentially gaining complete control over the affected system.

Affected Products

• Connectify Hotspot 2018
• ConnectifyService.exe with unquoted service path

Discovery Timeline

• 2026-01-13 - CVE CVE-2022-50929 published to NVD
• 2026-01-13 - Last updated in NVD database

Technical Details for CVE-2022-50929

Vulnerability Analysis

This vulnerability is classified under CWE-428 (Unquoted Search Path or Element). The root of the issue lies in how the ConnectifyService is registered in the Windows Service Control Manager. When the service path contains spaces but is not enclosed in quotation marks, Windows follows a specific search algorithm to locate the executable.

For the vulnerable path C:\Program Files (x86)\Connectify\ConnectifyService.exe, Windows will attempt to execute in the following order:

1. C:\Program.exe
2. C:\Program Files.exe
3. C:\Program Files (x86)\Connectify\ConnectifyService.exe

If an attacker can write to C:\ or C:\Program Files (x86)\Connectify\, they can place a malicious executable that will be executed with the privileges of the service, typically SYSTEM or a high-privilege account.

Root Cause

The vulnerability stems from improper configuration during the software installation process. The service path was registered without proper quotation marks, failing to follow Windows security best practices for service registration. This oversight allows the Windows path parsing mechanism to be abused for privilege escalation.

Attack Vector

The attack requires local access to the system where Connectify Hotspot 2018 is installed. The attacker must have write permissions to one of the directories that Windows will search when attempting to resolve the unquoted path. Once a malicious executable is placed in the appropriate location, the next time the ConnectifyService starts (either through system reboot or manual restart), the attacker's code will execute with elevated privileges.

The exploitation process involves:

1. Identifying the unquoted service path in the Windows registry
2. Determining write access to directories in the path resolution chain
3. Placing a malicious executable named appropriately (e.g., Program.exe)
4. Triggering or waiting for the service to restart

Detection Methods for CVE-2022-50929

Indicators of Compromise

• Unexpected executables named Program.exe in the root of C:\ drive
• Suspicious executables in C:\Program Files (x86)\Connectify\ directory with names that could match partial path parsing
• Unusual service behavior or unexpected child processes from ConnectifyService
• Modified file timestamps on directories within the service path

Detection Strategies

• Query Windows services for unquoted paths using PowerShell: Get-WmiObject win32_service | Where-Object {$_.PathName -notlike '"*"' -and $_.PathName -like '* *'}
• Monitor file creation events in C:\ and C:\Program Files (x86)\ directories for suspicious executables
• Use endpoint detection and response (EDR) solutions to track service-related process spawning anomalies
• Implement application whitelisting to prevent unauthorized executables from running

Monitoring Recommendations

• Enable Windows Security Event logging for service control manager events (Event ID 7045)
• Configure file integrity monitoring (FIM) on directories within the vulnerable service path
• Deploy behavioral analysis to detect privilege escalation attempts from service contexts
• Monitor for unusual service restart patterns that could indicate exploitation attempts

How to Mitigate CVE-2022-50929

Immediate Actions Required

• Update to the latest version of Connectify Hotspot if a patched version is available
• Manually fix the registry entry to quote the service path properly
• Restrict write permissions on directories within the service path resolution chain
• Conduct a security audit to identify any malicious executables that may have been planted

Patch Information

Users should check the Connectify Official Website for updated versions that address this vulnerability. The VulnCheck Advisory on Connectify provides additional details about the vulnerability. Technical details about the exploitation method can be found in the Exploit-DB #50764 entry.

Workarounds

• Manually quote the service path in the Windows registry by modifying HKLM\SYSTEM\CurrentControlSet\Services\Connectify\ImagePath to include quotation marks
• Implement strict access controls on the C:\ and C:\Program Files (x86)\ directories
• Use Windows Defender Application Control (WDAC) or AppLocker to restrict execution of unauthorized binaries
• Consider uninstalling Connectify Hotspot 2018 if not critical to operations until a patch is available

# Registry fix to quote the service path (run as Administrator in PowerShell)
$servicePath = 'HKLM:\SYSTEM\CurrentControlSet\Services\Connectify'
$currentPath = (Get-ItemProperty -Path $servicePath).ImagePath
if ($currentPath -notlike '"*"') {
    Set-ItemProperty -Path $servicePath -Name ImagePath -Value "`"$currentPath`""
}