Microsoft Entra ID facilitates the configuration of software applications. If not managed properly, app permissions and misconfigurations result in security gaps.
Inside this article:
Microsoft Entra ID, an Identity and Access Management (IAM) system, emerges as a centralized repository for digital identities, facilitating the configuration of software applications to utilize it for user information storage.
The Microsoft identity platform, supporting authentication across various modern app architectures, adheres to industry-standard protocols such as OAuth 2.0 and OpenID Connect. This platform accommodates a wide range of application types including Single-page apps (SPAs), Web apps, Web APIs, mobile and native apps, and services, daemons, and scripts. Applications devoid of user interaction, particularly those with long-running processes, leverage the OAuth 2.0 client credentials flow to authenticate and access secured resources using the app's identity.
Proper management of applications within Microsoft Entra ID is crucial for maintaining the integrity and security of digital identities, as it serves as the central repository for all user information utilized by various applications. By adhering to industry-standard protocols and managing applications effectively, organizations can ensure secure and seamless authentication processes across diverse app architectures, thereby safeguarding access to critical resources.
Additionally, application management in Entra ID enables the secure operation of applications, especially those operating autonomously without user interaction, by preventing unauthorized access and potential security breaches through the careful control of app identities and permissions.
Industry research reveals that 39% of apps request high-risk permissions from Microsoft 365, a significant figure, especially considering that even "medium risk" permissions can be exploited. With companies of various sizes integrating thousands of SaaS applications into Microsoft 365, often without the security team's knowledge, the potential for unauthorized access and data breaches increases, as evidenced by 15% of third-party apps having the ability to read, create, update, and delete files, and 12% the ability to manage email content.
These findings, coupled with a Gartner survey indicating that almost 60% of respondents view oversharing, data loss, and content sprawl as major risks, prompted the CoreView team to develop the Entra Security Scanner for App Registrations, a free tool designed by Vasil Michev and Ivan Fioravanti to help IT teams identify and address elevated custom app permissions that could lead to non-compliance and security gaps.
The free tool was created in response to the Midnight Blizzard attack on Microsoft’s tenant, where an application with excessively high and risky privileges was exploited. This incident highlighted a broader issue: applications, regardless of their permissions, can pose significant security risks, especially those developed in-house or through less secure methods, such as using Power Apps or tenant administrators creating custom scripts via Graph Explorer. These applications appear differently in the Entra ID portal, prompting a need for more stringent management and oversight.
The Entra Security Scanner for App Registrations offers a comprehensive assessment of application permissions, identifying critical issues such as applications without owners and those with risky access. It also evaluates medium-severity issues, such as expired credentials and excessive validity, providing a detailed report that facilitates immediate corrective action.
This proactive approach to security, leveraging policies and severity levels, aligns with CoreView's commitment to maintaining a secure and compliant Microsoft 365 environment.
Download the Entra Security Scanner for App Registrations today.
For organizations seeking to enhance their security posture, the tool offers a granular analysis, enabling users to customize the evaluation criteria and dive deeper into potential vulnerabilities. The inclusion of an Excel file alongside the report simplifies the analysis, allowing for a focused investigation of flagged issues.
Here are the issues the tools reviews and flags:
To address these concerns, the team developed a preliminary tool offering a glance at six baseline policies, including identifying applications without owners—a critical compliance issue—and tracking applications with risky access. This approach stems from the realization that applications, especially those developed internally, often lack rigorous security checks compared to third-party applications vetted by vendors like CoreView.
The tool also tackles medium severity issues, such as expired credentials, by allowing customization of the script parameters to suit different organizational needs. This capability provides a more nuanced understanding of an application's security posture than the high-level information typically shown in the Microsoft portal. Additionally, the tool checks for excessive validity of certificates and the usage of apps within your tenant, highlighting unused apps that may still pose a security risk.
By focusing on securing fundamental aspects such as Directory ReadWrite access, and access to calendars, contacts, mails, files, and sites, this tool grades each application from A to F (skipping E) based on the severity of issues detected. This dynamic grading system, coupled with the ability to adapt the script, offers a detailed and actionable insight into the security health of applications within a tenant.
Furthermore, the tool provides detailed reports and an Excel file for deeper analysis, encouraging users to explore and address security issues directly from the portal. This proactive approach to application management and security monitoring is crucial for maintaining compliance and safeguarding against potential breaches.
Download the Entra Security Scanner for App Registrations today.
Entra Security Scanner for App Registrations serves as a valuable resource for identifying and mitigating security risks associated with both in-house and third-party applications connected to Microsoft tenants. By offering detailed insights and allowing for customization, it empowers organizations to strengthen their security posture and respond effectively to evolving threats.
And, for ongoing compliance and monitoring, consider CoreView's suite of M365 security and governance tools for an end-to-end solution that stretches across the whole Microsoft 365 ecosystem—from your tenant-level configurations, right up to your most critical workloads.
