Local Privilege Escalation Vulnerabilities in Lotus Notes Client
Local Privilege Escalation Through Default ntmulti.exe File Permissions
Unprivileged users can execute arbitrary programs that run with the privileges
of the LocalSystem account by replacing the Multi-user Cleanup Service
executable with arbitrary executables. This vulnerability exists because the
default file permissions assigned during installation to ntmulti.exe (the
executable for the Multi-user Cleanup Service) allow unprivileged, interactive
users to replace ntmulti.exe with any file.
Because the Multi-user Cleanup Service is a Windows service running with
LocalSystem privileges, unprivileged users can easily elevate their privileges.