Buffer overflows in NetWin Authentication Module (NWAuth) 3.0b and earlier, as implemented in DMail, SurgeFTP, and possibly other packages, could allow attackers to execute arbitrary code via long arguments to (1) the -del command or (2) the -lookup command.

NetWin SurgeFTP 2.0f and earlier encrypts passwords using weak hashing, a fixed salt value and modulo 40 calculations, which allows remote attackers to conduct brute force password guessing attacks against the administrator account on port 7021.

Netwin SurgeFTP version 23c8 and prior contains a vulnerability in its web-based administrative console that allows authenticated users to execute arbitrary system commands via crafted POST requests to surgeftpmgr.cgi. This can lead to full remote code execution on the underlying system.

The mirror mechanism in SurgeFTP 2.3a1 allows user-assisted, remote FTP servers to cause a denial of service (restart) via a malformed response to a PASV command.

Cross-site scripting (XSS) vulnerability in the mirrored server management interface in SurgeFTP 2.3a1 allows user-assisted, remote FTP servers to inject arbitrary web script or HTML via a malformed response without a status code, which is reflected to the user in the resulting error message. NOTE: this can be leveraged for root access via a sequence of steps involving web script that creates a new FTP user account.

Directory traversal vulnerability in NetWin SurgeFTP 2.0a and 1.0b allows a remote attacker to list arbitrary files and directories via the 'nlist ...' command.

NetWin SurgeFTP 2.0a and 1.0b allows a remote attacker to cause a denial of service (crash) via a CD command to a directory with an MS-DOS device name such as con.

NetWin SurgeFTP prior to 1.1h allows a remote attacker to cause a denial of service (crash) via an 'ls ..' command.

SurgeFTP 2.2m1 allows remote attackers to cause a denial of service (application hang) via the LEAK command.

The administrative interface (surgeftpmgr.cgi) for SurgeFTP Server 1.0b through 2.2k1 allows remote attackers to cause a temporary denial of service (crash) via requests with two percent (%) signs in the CMD parameter.

NetWin Authentication module (NWAuth) 2.0 and 3.0b, as implemented in SurgeFTP, DMail, and possibly other packages, uses weak password hashing, which could allow local users to decrypt passwords or use a different password that has the same hash value as the correct password.

Multiple cross-site scripting (XSS) vulnerabilities in surgeftpmgr.cgi in NetWin SurgeFTP 2.3a6 allow remote attackers to inject arbitrary web script or HTML via the (1) domainid or (2) classid parameter in a class action.