This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
Description
Attack Execution Flow
4
1
Step 1
Explore[Determine Nature of Messages] Determine the nature of messages being transported as well as the identifiers to be used as part of the attack
AI Translation
[Determinare la natura dei messaggi trasportati e gli identificatori da utilizzare come parte dell'attacco] Determinare la natura dei messaggi trasportati e gli identificatori da usare come parte dell'attacco
2
Step 2
Experiment[Authenticate] If required, authenticate to the distribution channel
AI Translation
[Autenticazione] Se necessario, autenticarsi al canale di distribuzione
3
Step 3
Experiment[Identify Known Client Identifiers] If any particular client's information is available through a control channel available to all users, the adversary will discover particular identifiers for targeted clients by observing this channel, or requesting client information through this channel.
AI Translation
[Identifica gli Identificatori Client Noti] Se le informazioni di un determinato cliente sono disponibili tramite un canale di controllo accessibile a tutti gli utenti, l'avversario scoprirà gli identificatori specifici dei clienti target osservando questo canale o richiedendo informazioni sul cliente attraverso esso.
4
Step 4
Experiment[Change Message Identifier] Adversaries with client access connecting to output channels could change their channel identifier and see someone else's (perhaps more privileged) data.
AI Translation
[Modifica identificatore del messaggio] Gli avversari con accesso client che si collegano ai canali di output potrebbero modificare il loro identificatore di canale e visualizzare i dati di qualcun altro (forse più privilegiato).
Mitigations
2
Associate Some Acl (In The Form Of A Token) With An Authenticated User Which They Provide Middleware. The Middleware Uses This Token As Part Of Its Channel/Message Selection For That Client, Or Part Of A Discerning Authorization Decision For Privileged Channels/Messages. The Purpose Is To Architect The System In A Way That Associates Proper Authentication/Authorization With Each Channel/Message.
Re-Architect System Input/Output Channels As Appropriate To Distribute Self-Protecting Data. That Is, Encrypt (Or Otherwise Protect) Channels/Messages So That Only Authorized Readers Can See Them.
Consequences
Security Scopes Affected
Access Control
Authorization
Confidentiality
Potential Impacts
Gain Privileges
Read Data
Relationships
Parent CAPECs
Related CAPECs
Resources Required
1
The adversary needs the ability to control source code or application configuration responsible for selecting which message/channel id is absorbed from the public distribution means.