The product receives input but does not validate it has the properties required to process it safely.
Validate all input against an allowlist of expected values, lengths, and types at every trust boundary.
MITRE ATT&CK techniques associated with this weakness class (mapped via MITRE CAPEC). A vulnerability of this type could let an adversary carry out:
A stage-by-stage walkthrough of the attack, mapped to the real MITRE ATT&CK tactics for this weakness — what the attacker is trying to do, what's at risk (what can be stolen or damaged), and how you defend. Understanding the playbook is how you shut it down.
Run attacker-chosen code or commands on the system.
Application logic and the host runtime — an attacker can execute arbitrary code or commands.
Least-privilege runtime, sandboxing, and safe deserialization/parsing.
Gain higher privileges — from a limited account to admin/root.
Over-permissioned services, weak file/permission boundaries, and setuid paths.
Drop privileges, enforce least privilege, and lock down file permissions.
Steal passwords, tokens, keys, and session material.
Passwords, API keys, session tokens, SSH/TLS keys, and secrets in memory, env, or config.
Secret managers, short-lived tokens, and no secrets in code/env/logs.
Map what else is reachable — hosts, services, data stores, and accounts.
Internal topology, service inventory, and data locations the attacker enumerates.
Network segmentation and detection of unusual internal scanning.
Cause damage — destroy, encrypt, deny, or manipulate.
Availability and integrity: ransomware encryption, data wiping, or service denial.
Tested offline backups, integrity checks, and rate/abuse limiting.
This is a defensive, conceptual walkthrough for education — stages reflect MITRE ATT&CK tactics associated with this weakness class, not a working exploit. Not every attack uses every stage.