CWE-1245 Details

CWE-1245

Improper Finite State Machines (FSMs) in Hardware Logic
Incomplete
2020-02-24
00h00 +00:00
2025-12-11
00h00 +00:00
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Name: Improper Finite State Machines (FSMs) in Hardware Logic

Faulty finite state machines (FSMs) in the hardware logic allow an attacker to put the system in an undefined state, to cause a denial of service (DoS) or gain privileges on the victim's system.

Allgemeine Informationen

Einführungsmodi

Architecture and Design
Implementation

Anwendbare Plattformen

Sprache

Class: Not Language-Specific (Undetermined)

Betriebssysteme

Class: Not OS-Specific (Undetermined)

Architekturen

Class: Not Architecture-Specific (Undetermined)

Technologien

Class: System on Chip (Undetermined)

Häufige Konsequenzen

Bereich Auswirkung Wahrscheinlichkeit
Availability
Access Control
Unexpected State, DoS: Crash, Exit, or Restart, DoS: Instability, Gain Privileges or Assume Identity

Note: Faulty FSM designs that do not account for all states, either through undefined states (left as don't cares) or through incorrect implementation, might lead an attacker to drive the system into an unstable state from which the system cannot recover without a reset, thus causing a DoS. Depending on what the FSM is used for, an attacker might also gain additional privileges to launch further attacks and compromise the security guarantees.

Mögliche Gegenmaßnahmen

Phases : Architecture and Design // Implementation
Define all possible states and handle all unused states through default statements. Ensure that system defaults to a secure state.

Hinweise zur Schwachstellen-Zuordnung

Begründung : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Kommentar : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Verwandte Angriffsmuster

CAPEC-ID Name des Angriffsmusters
CAPEC-74 Manipulating State

Referenzen

REF-1060

FSM Anomaly Detection using Formal Analysis
Farimah Farahmandi, Prabhat Mishra.
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8119228&tag=1

Einreichung

Name Organisation Datum Veröffentlichungsdatum Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi Intel Corporation 2020-02-12 +00:00 2020-02-24 +00:00 4.0

Änderungen

Name Organisation Datum Kommentar
CWE Content Team MITRE 2020-08-20 +00:00 updated Related_Attack_Patterns
CWE Content Team MITRE 2022-10-13 +00:00 updated Demonstrative_Examples
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes
CWE Content Team MITRE 2025-12-11 +00:00 updated Common_Consequences, Description, Weakness_Ordinalities