Authentication Bypass Discovered in Microsoft Entra ID

August 21, 2024 | A vulnerability in Microsoft Entra ID (formerly Azure AD) allows attackers to bypass security measures via the pass-through authentication (PTA) agent. This could enable unauthorized access to any synchronized Active Directory user, potentially escalating privileges to that of a Global Administrator.

Experts, including Sarah Jones from Critical Start, highlight the need for organizations to tighten security around PTA agent servers and enforce strong password policies and multi-factor authentication to mitigate these risks. As Tal Mandel Bar from DoControl notes, this vulnerability illustrates how cloud identity services can become prime targets, emphasizing the importance of robust SaaS security measures.

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