Active Webcam 115 Unquoted Service Path Patched [new]

C:\Program Files\Active WebCam\webcam.exe

Look for:

When Windows starts a service, it reads the path to the executable file from the registry. If the path contains spaces and lacks quotation marks, Windows interprets the spaces as separators. The operating system attempts to locate and execute programs by truncating the path at each space, appending a .exe extension, and checking if that file exists.

Restrict standard user write permissions on root drives ( C:\ ) and standard installation directories ( C:\Program Files\ , C:\Program Files (x86)\ ).

sc config "Active Webcam" binpath= "\"C:\Program Files\Active Webcam\webcam.exe\"" Use code with caution. active webcam 115 unquoted service path patched

Consider a hypothetical unquoted path for Active Webcam: C:\Program Files (x86)\Active Webcam\WebcamService.exe

, allowing them to execute arbitrary code and gain full control over the affected machine. National Institute of Standards and Technology (.gov) Status: "Patched" vs. Manual Fix

Add quotes around the path: "C:\Program Files\Active Webcam 115\ActiveWebcamService.exe" Restart the computer. Verifying the Patch

An unquoted service path vulnerability occurs when a Windows service executable path contains spaces and is not enclosed in quotation marks. C:\Program Files\Active WebCam\webcam

A critical security flaw in Active WebCam 11.5 unquoted service path vulnerability tracked as CVE-2021-47790

Windows follows a specific rule when parsing service binary paths:

The impact of this vulnerability is severe, as reflected in its CVSS scores. A successful exploit allows an attacker to completely compromise the confidentiality, integrity, and availability of the target system.

In Windows operating systems, services are programs that run in the background, performing specific functions. Each service has a service path that defines the executable that runs when the service starts. An unquoted service path is one that is not enclosed in quotes. This might seem like a minor detail, but it can have significant security implications. Restrict standard user write permissions on root drives

$serviceName = "ActiveWebcamService" $service = Get-WmiObject -Class Win32_Service -Filter "Name='$serviceName'" if ($service.PathName -notmatch '^".*"$') $patchedPath = "`"" + $service.PathName + "`"" Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\$serviceName" -Name ImagePath -Value $patchedPath Write-Output "Active Webcam 11.5 service path has been successfully patched." else Write-Output "Service path is already safely quoted." Use code with caution. Conclusion and Best Practices

The patch is available for download from the Topbytes website, and users are strongly advised to update their installations to prevent exploitation. The patched version of Active Webcam 115 is [insert version number], and users can verify their installation by checking the software's version number.

The absence of wrapping double quotes ( "..." ) confirmed that the application was susceptible to binary planting via the unquoted path vector. Exploitation Requirements

If you are using PowerShell for post-exploitation auditing, the PowerUp script from the PowerSploit framework makes detection trivial: powershell Import-Module .\PowerUp.ps1 Get-ServiceUnquoted Use code with caution.

This specific phrase refers to a security update for the software (version 11.5), addressing a common Windows vulnerability known as an Unquoted Service Path . What was the vulnerability?