Version 11.5 (build 115) was particularly affected by a service path misconfiguration that, until now, exposed users to a classic Windows privilege escalation attack.
If you are using Active WebCam 11.5, update today. If you manage other Windows services, audit them for the same flaw—before an attacker does.
(Note: Replace "Active Webcam" with the precise service name found during verification, and ensure the space after binpath= is maintained.) Verifying the Patch After applying the fix, re-run the verification command: sc qc "Active Webcam" Use code with caution.
The output should show the path wrapped in quotes, for example: "C:\Program Files\Active Webcam 115\ActiveWebcamService.exe" . If the quotes are present, the vulnerability is patched . Conclusion active webcam 115 unquoted service path patched
Because there are spaces and no quotes, Windows attempts to execute files in the following order, appending .exe to every element before a space:
: A local attacker with limited privileges can place a malicious executable in a parent directory (like C:\Program.exe ). When the service restarts, Windows may execute the malicious file instead of the intended program, potentially granting the attacker administrative (SYSTEM) privileges .
If either command returns a path resembling C:\Program Files (x86)\Active Webcam\... without wrapping double quotes, the service is vulnerable. Remediating and Patching the Defect Version 11
def check_active_webcam_vuln(): """ Checks for the 'Active Webcam 11.5' unquoted service path vulnerability. Vulnerable services have a path containing spaces and are not enclosed in quotes. """ service_name = "Active WebCam" # Standard registry path for services reg_path = r"SYSTEM\CurrentControlSet\Services"
The vulnerability is triggered only when the Active WebCam service is set to start automatically. In the Active WebCam software, this occurs when the user enables both and “Start as Service” in the program options.
Windows handles service paths in a very specific manner when they are not explicitly wrapped in quotation marks. If a service path contains spaces and lacks quotation marks, the Windows Service Control Manager (SCM) will interpret the path as a sequence of execution attempts, stopping at each space to look for an executable file. How Windows Interprets Unquoted Paths (Note: Replace "Active Webcam" with the precise service
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.
Example in C++:
An attacker who has already gained low-privileged access to a system will typically audit the machine for unquoted service paths. 1. Enumeration
