Executive Summary

This vulnerability exists in the Single Sign-On (SSO) mechanism of Synology DiskStation Manager (DSM) versions before 7.2.2-72806-5 and 7.3.1-86003-1. It is caused by an improper check for unusual or exceptional conditions, which allows remote attackers to bypass authentication if they have prior knowledge of the distinguished name (DN). This means an attacker can gain unauthorized access without proper credentials by exploiting this flaw.

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Impact Analysis

The impact of this vulnerability is significant because it allows remote attackers to bypass authentication controls, potentially gaining full access to the affected Synology DiskStation Manager system. This can lead to unauthorized access to sensitive data, full control over the system, and the ability to perform actions with high privileges, affecting confidentiality, integrity, and availability.

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Detection Guidance

There are no specific detection methods or commands provided in the available information to identify this vulnerability on your network or system.

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Mitigation Strategies

The recommended immediate step to mitigate this vulnerability is to upgrade Synology DiskStation Manager (DSM) to version 7.3.1-86003-1 or later if you are using DSM 7.3, or to version 7.2.2-72806-5 or later if you are using DSM 7.2.2.

No other mitigation steps beyond applying these updates have been provided.

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