Linux Security Concepts: Difference between revisions
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=Unprivileged Process= | =Unprivileged Process= | ||
An unprivileged process is a process with a non-zero its [[#Effective_User_ID|effective user ID]]. Unprivileged processes are subject to full permission checking based on the process' credentials: [[#Effective_User_ID|effective UID]], [[#Effective_Group_ID|effective GID]] and supplementary group list. | An unprivileged process is a process with a non-zero its [[#Effective_User_ID|effective user ID]]. Unprivileged processes are subject to full permission checking based on the process' credentials: [[#Effective_User_ID|effective UID]], [[#Effective_Group_ID|effective GID]] and [[#Supplementary_Group_List|supplementary group list]]. | ||
=Effective User ID= | =Effective User ID= | ||
=Effective Group ID= | =Effective Group ID= | ||
=Supplementary Group List= | =Supplementary Group List= | ||
Revision as of 21:29, 1 March 2021
Internal
Privileged Process
Traditional UNIX implementations distinguish two categories of processes for the purpose of performing permission checks: privileged processes and unprivileged processes. A privileged process is a process with its effective user ID is 0, referred to as superuser or root. Privileged processes bypass all kernel permission checks.
Unprivileged Process
An unprivileged process is a process with a non-zero its effective user ID. Unprivileged processes are subject to full permission checking based on the process' credentials: effective UID, effective GID and supplementary group list.