Adversaries may use credentials obtained from breach dumps of unrelated accounts to gain access to target accounts through credential overlap. Occasionally, large numbers of username and password pairs are dumped online when a website or service is compromised and the user account credentials accessed. The information may be useful to an adversary attempting to compromise accounts by taking advantage of the tendency for users to use the same passwords across personal and business accounts.
Credential stuffing is a risky option because it could cause numerous authentication failures and account lockouts, depending on the organization's login failure policies.
Typically, management services over commonly used ports are used when stuffing credentials. Commonly targeted services include the following:
In addition to management services, adversaries may "target single sign-on (SSO) and cloud-based applications utilizing federated authentication protocols," as well as externally facing email applications, such as Office 365.(Citation: US-CERT TA18-068A 2018)
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| IAM-02 | Strong Password Policy and Procedures | mitigates | T1110.004 | Credential Stuffing |
Comments
This control requires the CSP to enforce strong password management practices, implement protections against brute-force attacks, and support secure password reset processes.
For this technique, adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained. In terms of mitigation, Set account lockout policies after a certain number of failed login attempts to prevent passwords from being guessed. Also, where possible, enforce multi-factor authentication on externally facing services to limit brute force succession.
References
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