Progress WS_FTP Server 4.0.2

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

Multiple buffer overflows in Ipswitch WS_FTP Server 4.0.2 (1) allow remote authenticated users to execute arbitrary code by causing a large error string to be generated by the ALLO handler, or (2) may allow remote FTP administrators to execute arbitrary code by causing a long hostname or username to be inserted into a reply to a STAT command while a file is being transferred.

Ipswitch WS_FTP Server 4.0.2 allows remote authenticated users to execute arbitrary programs as SYSTEM by using the SITE command to modify certain iFtpSvc options that are handled by iftpmgr.exe.

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.