CAPEC Definitions

    CAPEC Definitions / CAPEC-74

    CAPEC-74: Manipulating State

    The adversary modifies state information maintained by the target software or causes a state transition in hardware. If successful, the target will use this tainted state and execute in an unintended manner. State management is an important function within a software application. User state maintained by the application can include usernames, payment information, browsing history as well as application-specific contents such as items in a shopping cart. Manipulating user state can be employed by an adversary to elevate privilege, conduct fraudulent transactions or otherwise modify the flow of the application to derive certain benefits. If there is a hardware logic error in a finite state machine, the adversary can use this to put the system in an undefined state which could cause a denial of service or exposure of secure data.

    Severity:High
    Possibility:Medium

    Extended Description

    No Extended Description.

    Mitigations

    Do not rely solely on user-controllable locations, such as cookies or URL parameters, to maintain user state.

    Avoid sensitive information, such as usernames or authentication and authorization information, in user-controllable locations.

    Sensitive information that is part of the user state must be appropriately protected to ensure confidentiality and integrity at each request.

    All possible states must be handled by hardware finite state machines.

    Relationships with other CAPECs

    No related CAPECs found.

    Prerequisites

    User state is maintained at least in some way in user-controllable locations, such as cookies or URL parameters.

    There is a faulty finite state machine in the hardware logic that can be exploited.

    Related Weaknesses

    CWE-372: Incomplete Internal State Distinction

    CWE-315: Cleartext Storage of Sensitive Information in a Cookie

    CWE-353: Missing Support for Integrity Check

    CWE-693: Protection Mechanism Failure

    CWE-1245: Improper Finite State Machines (FSMs) in Hardware Logic

    CWE-1253: Incorrect Selection of Fuse Values

    CWE-1265: Unintended Reentrant Invocation of Non-reentrant Code Via Nested Calls

    CWE-1271: Uninitialized Value on Reset for Registers Holding Security Settings