CVE-2025-8074: BeeDrive Origin Validation Flaw Exposes Data

Overview

CVE-2025-8074 describes an origin validation error vulnerability found in Synology BeeDrive for desktop versions prior to 1.4.3-13973. This flaw allows local users to potentially write arbitrary files containing non-sensitive information to the system through unspecified attack vectors. This means an attacker with local access could leverage this vulnerability to modify system files, potentially leading to unexpected application behavior or system instability.

Technical Details

The core issue lies in insufficient validation of the origin of data being processed by BeeDrive. Without proper origin validation, the application can be tricked into accepting data from unauthorized sources. In this specific case, a local attacker can exploit this weakness to write arbitrary files to the system. While the advisory states that only non-sensitive information can be written, the implications of even non-sensitive data manipulation can be significant. The exact attack vectors are currently unspecified but could involve manipulating inter-process communication or crafting specific file formats that BeeDrive processes.

CVSS Analysis

This vulnerability has been assigned a CVSS score of 5.6 (MEDIUM). This score reflects the following characteristics:

• Attack Vector: Local (L) – The attacker needs local access to the affected system.
• Attack Complexity: Low (L) – Exploitation is relatively easy to achieve.
• Privileges Required: None (N) – The attacker does not need elevated privileges to exploit the vulnerability.
• User Interaction: None (N) – No user interaction is required to trigger the vulnerability.
• Scope: Unchanged (U) – The vulnerability affects only the BeeDrive application itself.
• Confidentiality Impact: None (N) – The vulnerability does not directly compromise the confidentiality of data.
• Integrity Impact: Low (L) – The attacker can modify some system files, potentially leading to unexpected behavior.
• Availability Impact: None (N) – The vulnerability does not directly impact the availability of the system.

Possible Impact

While the vulnerability is rated as medium severity and allows writing only non-sensitive information, the potential impact should not be underestimated. A successful exploit could lead to:

• Application Instability: Writing incorrect or malicious configuration files could cause BeeDrive to malfunction or crash.
• Data Corruption: Modification of data related to BeeDrive could lead to data loss or inconsistencies.
• Privilege Escalation (Potential): While not directly stated, under certain circumstances, manipulation of specific files *could* be leveraged to achieve a higher level of access. This would depend on the specifics of the BeeDrive implementation and is not guaranteed.
• Denial of Service (DoS): Repeated exploitation could fill up disk space, leading to a denial-of-service condition.

Mitigation and Patch Steps

The recommended mitigation is to update Synology BeeDrive for desktop to version 1.4.3-13973 or later. Synology has released a patch that addresses the origin validation error. You can download the latest version from the Synology Download Center or through the BeeDrive application’s built-in update mechanism.

1. Download the latest version: Visit the Synology Download Center.
2. Install the update: Follow the instructions provided by Synology to install the update.
3. Verify the update: After installation, verify that BeeDrive is running version 1.4.3-13973 or later.

References

Synology Security Advisory SA_25_09