That’s when I knew we had a Directory Services privilege escalation problem. Not a theory. Not a what-if. A real, unfolding incident. In many systems, Directory Services—like Active Directory or LDAP—are the backbone of authentication, authorization, and access control. When attackers gain the ability to escalate privileges inside these services, they don’t just bend the rules. They rewrite them.
Privilege escalation in Directory Services often starts with a small foothold: a misconfigured group policy, a weak service account password, unconstrained delegation, or an account with overly broad permissions. From there, the attacker moves laterally, chaining vulnerabilities until they gain Domain Admin or equivalent control. At that point, every account, every machine, and every resource becomes theirs to command.
The most common vectors include:
- Service Account Misconfigurations: Accounts running critical services that have excessive privileges and weak protections.
- Delegation Abuse: Exploiting unconstrained or misconfigured delegation to impersonate higher-privilege accounts.
- ACL Manipulation: Modifying Access Control Lists on directory objects to grant themselves privileges.
- Kerberoasting: Extracting service tickets and cracking service account credentials offline.
These issues happen because Directory Services environments grow complex and old. Security controls lag, and attackers thrive in that gap. Spotting privilege escalation paths before attackers do means actively mapping permissions, auditing accounts, and hardening configurations.