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In this type of misconfiguration, cyberattackers could use exposed secrets to authenticate directly via Microsoft’s OAuth 2.0 endpoints and infiltrate Azure cloud environments.
Microsoft Entra ID (formerly Azure Active Directory) is the backbone of modern identity management, enabling secure access to the applications, data, and services your business relies on. As hybrid work and cloud adoption accelerate, Entra ID plays an even more central role — managing authentication, enforcing policy, and connecting users across distributed environments
A proof-of-concept (PoC) attack vector exploits two Azure authentication tokens from within a browser, giving threat actors persistent access to key cloud services, including Microsoft 365 applications.
A proof-of-concept attack called "Cookie-Bite" uses a browser extension to steal browser session cookies from Azure Entra ID to bypass multi-factor authentication (MFA) protections and maintain access to cloud services like Microsoft 365, Outlook, and Teams. [...]
Two common attacks against on-premises Kerberos authentication servers — known as Pass the Ticket and Silver Ticket — can be used against Microsoft's Azure AD Kerberos, a security firms says.
Two of the vulnerabilities — in Azure Functions and Azure Digital Twins — required no account authentication for an attacker to exploit them.
Microsoft added certificate-based authentication (CBA) to the Azure Active Directory to help organizations enable phishing-resistant MFA that complies with US federal requirements. The change paves the way for enterprises to migrate their Active Directory implementations to the cloud.