A vulnerability was found in Synology Router Manager up to 1.1.5 (Router Operating System). It has been classified as critical. This affects the function SYNO.FileStation.Extract. The manipulation of the argument dest_folder_path with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on integrity, and availability. The summary by CVE is:

Directory traversal vulnerability in the SYNO.FileStation.Extract in Synology Router Manager (SRM) before 1.1.5-6542-4 allows remote authenticated users to write arbitrary files via the dest_folder_path parameter.

The bug was discovered 12/08/2017. The weakness was published 12/08/2017 (Website). It is possible to read the advisory at synology.com. This vulnerability is uniquely identified as CVE-2017-15895 since 10/25/2017. It is possible to initiate the attack remotely. The successful exploitation requires a authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 1.1.5-6542-4 eliminates this vulnerability.

Productinfo

Type

• Router Operating System

Vendor

• Synology

Name

• Router Manager

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5

License

• commercial

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CPE 2.2info

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