Linux privilege escalation is the process of obtaining greater privileges than those initially assigned to a user or process. It involves identifying weaknesses in permissions, configurations, services, applications, and other system resources that may allow a lower-privileged security context to gain additional authority.
Linux permissions control access to files and directories through the owner, group, and others model, using read, write, and execute permissions. Understanding permission strings, numeric values, and special permissions such as SUID, SGID, and the Sticky Bit provides a foundation for understanding Linux access control.
The Linux file system provides the hierarchical structure used to organize files, directories, system configuration, user data, devices, and application resources. Understanding directories, inodes, permissions, ownership, links, mount points, file systems, and storage relationships provides a strong foundation for Linux administration and security.
inux Enumeration is the systematic gathering of information about Linux hosts, services, applications, and exposed infrastructure through passive and active techniques. It is used by security professionals during authorized security assessments to understand and evaluate a target, and it may also be used by real-world attackers to gather information about the target and identify opportunities for subsequent attack activity.
Linux provides the core operating environment for applications, processes, users, filesystems, services, and system resources. Understanding its architecture, users and groups, permissions, processes, services, and security context establishes the foundation for Linux administration