Relative Path Traversal in Microsoft Office SharePoint

Executive Summary

This vulnerability is a relative path traversal in Microsoft Office SharePoint. It allows an authorized attacker to access and disclose sensitive information over a network by manipulating file paths.

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Detection Guidance

Detection requires monitoring SharePoint server access logs for unusual path traversal patterns or unauthorized file access attempts. Check for requests containing sequences like '../' or encoded variants in URLs or file paths. Review Microsoft Defender for Office 365 alerts for suspicious SharePoint activity.

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Impact Analysis

An attacker could exploit this to read unauthorized files or data stored on the SharePoint server, potentially exposing sensitive information such as documents or user data.

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Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating compliance requirements for data protection such as GDPR or HIPAA, which mandate strict controls over sensitive information.

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Mitigation Strategies

Apply the latest security updates from Microsoft for SharePoint as soon as possible to patch the relative path traversal vulnerability.

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