Nssm224 Privilege: Escalation Updated _verified_

Create a dedicated Managed Service Account (MSA) or a standard Virtual Account.

IBM Robotic Process Automation versions 21.0.0 through 21.0.7.17 and 23.0.0 through 23.0.18 suffer from a similar misconfiguration. “All files in the install inherit the file permissions of the parent directory and therefore a non‑privileged user can substitute any executable for the nssm.exe service”. The IBM security bulletin warns that this could “allow a local user to escalate their privileges”. nssm224 privilege escalation updated

If they lack service control permissions, they simply wait for an administrative reboot or a system update to trigger the service restart. Once executed, a reverse shell with NT AUTHORITY\SYSTEM privileges is sent back to the attacker's listener. Updated Mitigation and Defense Strategies Create a dedicated Managed Service Account (MSA) or

Monitor frequent, unexpected stopping and starting of services, which often indicates an attacker testing or executing a payload. Mitigation and Hardening Strategies The IBM security bulletin warns that this could

The attacker creates a malicious executable or a reverse shell payload using a tool like msfvenom :

Apply the principle of least privilege. Only administrators should have write access to service directories and binaries.

Use Registry Editor ( regedit ) or PowerShell to verify that only elevated accounts can modify the Parameters subkeys associated with NSSM services. 3. Quote All Service Paths