CAPEC-645 Metadata
Likelihood of Attack
Low
Typical Severity
High
Overview
Summary
An adversary uses stolen Kerberos tickets to access systems/resources that leverage the Kerberos authentication protocol. The Kerberos authentication protocol centers around a ticketing system which is used to request/grant access to services and to then access the requested services. An adversary can obtain any one of these tickets (e.g. Service Ticket, Ticket Granting Ticket, Silver Ticket, or Golden Ticket) to authenticate to a system/resource without needing the account's credentials. Depending on the ticket obtained, the adversary may be able to access a particular resource or generate TGTs for any account within an Active Directory Domain.
Prerequisites
The adversary needs physical access to the victim system. The use of a third-party credential harvesting tool.
Potential Solutions / Mitigations
Reset the built-in KRBTGT account password twice to invalidate the existence of any current Golden Tickets and any tickets derived from them. Monitor system and domain logs for abnormal access.
Related Weaknesses (CWE)
Related CAPECs
| CAPEC ID | Description |
|---|---|
| CAPEC-151 | Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials. |
| CAPEC-652 | An adversary obtains (i.e. steals or purchases) legitimate Kerberos credentials (e.g. Kerberos service account userID/password or Kerberos Tickets) with the goal of achieving authenticated access to additional systems, applications, or services within the domain. |
Taxonomy Mappings
Taxonomy: ATTACK
| Entry ID | Entry Name |
|---|---|
| 1550.003 | Use Alternate Authentication Material:Pass The Ticket |
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