
Securing Microsoft ID Apps: Addressing the Threat of Misconfigured Permissions
Misconfigured app permissions in Microsoft Entra ID pose a significant security risk, enabling attackers to exploit applications with excessive or improperly assigned privileges. This session will delve into the vulnerabilities associated with misconfigurations, such as assigning non-administrative accounts as application owners and granting unconstrained permissions like Mail.ReadWrite or Mail.Send.
Participants will explore real-world examples, including the Midnight Blizzard attack, which exploited a compromised OAuth application to infiltrate Microsoft’s tenant.
Attendees will learn actionable strategies to mitigate these threats, including:
- Implementing stringent access controls for app ownership.
- Applying the principle of least privilege to app permissions.
- Utilizing tools such as PowerShell cmdlets and security scanners to enforce application access policies and monitor elevated permissions.