Winmail Server up to 6.2 PHP File netdisk.php copy_folder_file path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in Winmail Server up to 6.2. This affects the function copy_folder_file of the file netdisk.php of the component PHP File Handler. This manipulation causes path traversal. The identification of this vulnerability is CVE-2018-5700. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Winmail Server up to 6.2 (Mail Server Software). Affected by this vulnerability is the function copy_folder_file of the file netdisk.php of the component PHP File Handler. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Winmail Server through 6.2 allows remote code execution by authenticated users who leverage directory traversal in a netdisk.php copy_folder_file call (in inc/class.ftpfolder.php) to move a .php file from the FTP folder into a web folder.

The bug was discovered 01/15/2018. The weakness was shared 01/14/2018 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2018-5700 since 01/14/2018. The exploitation appears to be easy. The attack can be launched remotely. The successful exploitation needs a single authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

By approaching the search of inurl:netdisk.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Mail Server Software

Vendor

• Winmail

Name

• Server

Version

• 6.0
• 6.1
• 6.2

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion