Penetration testers often bundle NSSM 2.24 for two reasons:
to create and manage malicious services on compromised hosts. Securelist Recommendation
NSSM is a free, open-source service manager designed for Windows operating systems. It provides a simple and efficient way to manage services, allowing users to install, configure, and monitor services with ease. NSSM is widely used in production environments due to its reliability, flexibility, and ease of use. nssm-2.24 exploit
Because NSSM runs with the privileges of the account that installs the service, it can be a vector for local privilege escalation if the file itself has weak permissions.
When an attacker sends a malicious request to the NSSM service, the nssm_validate_service function processes the request and fails to properly validate the input parameters. This leads to a buffer overflow, which can be exploited by an attacker to execute arbitrary code on the system. Penetration testers often bundle NSSM 2
The following proof-of-concept exploit demonstrates the vulnerability:
: When a service is registered with a file path containing spaces (e.g., C:\Program Files\My Service\nssm.exe ) but lacks surrounding quotation marks, Windows interprets the path ambiguously. NSSM is widely used in production environments due
The vulnerability in NSSM-2.24 has a significant impact, as it allows an attacker to execute arbitrary code with elevated privileges. To mitigate this vulnerability, users are advised to: