Microsoft SharePoint Layouts Exposure Scanner

Microsoft SharePoint is a web application platform in the Microsoft Office server suite. It is typically used by individuals and businesses to store, organize, share, and access information from any device. SharePoint allows for dynamic interaction and offers various functionalities, such as hosting websites, collaborating and networking, maintaining authoritative records, and more. Businesses of all sizes utilize SharePoint to improve business processes, collaboration, and communication within an organization. It serves as a centralized location to manage and share documents, offering version control and access restrictions. With its diverse capabilities, SharePoint helps mitigate challenges associated with traditional document and information sharing systems.

The exposure vulnerability detected in this scanner pertains to the potential exposure of SharePoint Layouts endpoints. This condition occurs when specific URLs within the application are unintentionally accessible, leading to possible information leakage. Exposed endpoints may inadvertently reveal sensitive site configuration information or user data. The vulnerability is primarily rated as low severity due to its limited exploitation potential and the nature of data exposed in typical scenarios. Identifying exposed endpoints is crucial to minimizing exposure risks and ensuring protected internal data and configurations.

Technical details about the exposure involve specific endpoints that are publicly accessible without proper authentication controls. Vulnerable endpoints might include '/_layouts/15/viewlsts.aspx' and '/_layouts/viewlsts.aspx'. These pages typically present details about site content and libraries, which could include metadata on file storage and access. Detection relies on specific HTTP GET requests to these paths, checking for the presence of certain content elements in the response. Proper identification of these endpoints is necessary to prevent unauthorized access or unintended data exposure.

If exploited, an exposure of this nature could allow attackers to gather intelligence about the structure and contents of a SharePoint site. Malicious actors could use this information to craft further attacks or phishing attempts. Unauthorized access to site libraries may lead to the unintentional disclosure of sensitive or proprietary information. While generally of low risk individually, these vulnerabilities can provide a stepping stone for more advanced forms of social engineering or hacking attempts.

REFERENCES

• https://sharepointstuff.com/2021/03/30/useful-sharepoint-urls/