Ipswitch WS_FTP Server up to 8.6.0 SSHServerAPI.dll path traversal

Summaryinfo

A vulnerability classified as critical was found in Ipswitch WS_FTP Server up to 8.6.0. Affected is an unknown function in the library SSHServerAPI.dll. Such manipulation leads to path traversal. This vulnerability is listed as CVE-2019-12146. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Ipswitch WS_FTP Server up to 8.6.0 (File Transfer Software). Affected by this issue is an unknown function in the library SSHServerAPI.dll. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. Attackers have the ability to abuse a flaw in the SCP listener by crafting strings using specific patterns to write files and create directories outside of their authorized directory.

The weakness was presented 06/11/2019 (Website). The advisory is shared for download at docs.ipswitch.com. This vulnerability is handled as CVE-2019-12146 since 05/16/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 8.6.1 eliminates this vulnerability.

See VDB-136385, VDB-136386 and VDB-136387 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• File Transfer Software

Vendor

• Ipswitch

Name

• WS_FTP Server

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6.0

License

• commercial

Website

• Vendor: https://www.ipswitch.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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