In WS_FTP Server versions prior to 8.7.6 and 8.8.4, an unrestricted file upload flaw has been identified. An authenticated Ad Hoc Transfer user has the ability to craft an API call which allows them to upload a file to a specified location on the underlying operating system hosting the WS_FTP Server application.

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a directory traversal vulnerability was discovered.  An attacker could leverage this vulnerability to perform file operations (delete, rename, rmdir, mkdir) on files and folders outside of their authorized WS_FTP folder path.  Attackers could also escape the context of the WS_FTP Server file structure and perform the same level of operations (delete, rename, rmdir, mkdir) on file and folder locations on the underlying operating system.

In WS_FTP Server version prior to 8.8.2, an unauthenticated user could enumerate files under the 'WebServiceHost' directory listing.

In WS_FTP Server version prior to 8.8.2, the WS_FTP Server Manager interface was missing cross-site request forgery (CSRF) protection on a POST transaction corresponding to a WS_FTP Server administrative function.

In WS_FTP Server version prior to 8.8.2, a stored cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Management module. An attacker with administrative privileges could import a SSL certificate with malicious attributes containing cross-site scripting payloads.  Once the cross-site scripting payload is successfully stored,  an attacker could leverage this vulnerability to target WS_FTP Server admins with a specialized payload which results in the execution of malicious JavaScript within the context of the victims browser.

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a SQL injection vulnerability exists in the WS_FTP Server manager interface. An attacker may be able to infer information about the structure and contents of the database and execute SQL statements that alter or delete database elements.

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Ad Hoc Transfer module.  An attacker could leverage this vulnerability to target WS_FTP Server users with a specialized payload which results in the execution of malicious JavaScript within the context of the victims browser.

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.  

In Progress WS_FTP Server before 8.8, it is possible for a host administrator to elevate their privileges via the administrative interface due to insufficient authorization controls applied on user modification workflows.

A Directory Traversal issue was discovered in SSHServerAPI.dll in Progress ipswitch WS_FTP Server 2018 before 8.6.1. An attacker can supply a string using special patterns via the SCP protocol to disclose WS_FTP usernames as well as filenames.

Unspecified vulnerability in the log analyzer in WS_FTP Server 5.05 before Hotfix 1, and possibly other versions down to 5.0, prevents certain sensitive information from being displayed in the (1) Files and (2) Summary tabs. NOTE: in the early publication of this identifier on 20060926, the description was used for the wrong issue.

Multiple buffer overflows in Ipswitch WS_FTP Server 5.05 before Hotfix 1 allow remote authenticated users to execute arbitrary code via long (1) XCRC, (2) XSHA1, or (3) XMD5 commands.

Ipswitch WS_FTP Server 4.0.2 allows remote attackers to cause a denial of service (disk consumption) and bypass file size restrictions via a REST command with a large size argument, followed by a STOR of a smaller file.

Ipswitch WS_FTP Server 4.0.2 has a backdoor XXSESS_MGRYY username with a default password, which allows remote attackers to gain access.