A vulnerability classified as problematic was found in Xlightftpd Xlight FTP Server 1.1. This vulnerability affects unknown code of the component Login. The manipulation of the argument user leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-251560.

Directory traversal vulnerability in the SFTP/SSH2 virtual server in Xlight FTP Server 3.5.0, 3.5.5, and possibly other versions before 3.6 allows remote authenticated users to read, overwrite, or delete arbitrary files via .. (dot dot) sequences in the (1) ls, (2) rm, (3) rename, and other unspecified commands.

Multiple SQL injection vulnerabilities in Xlight FTP Server before 3.2.1, when ODBC authentication is enabled, allow remote attackers to execute arbitrary SQL commands via the (1) USER (aka username) or (2) PASS (aka password) command.

The LDAP authentication feature in XLight FTP Server before 2.83, when used with some unspecified LDAP servers, does not check for blank passwords, which allows remote attackers to bypass intended access restrictions.

Xlight 1.52, with log to screen enabled, allows remote attackers to cause a denial of service by requesting a long directory consisting of . (dot) and / (slash) characters, which causes the server to crash when the administrator views the log file, possibly triggering a buffer overflow.

Xlight FTP server 1.52 allows remote authenticated users to cause a denial of service (crash) via a RETR command with a long argument containing a large number of / (slash) characters, possibly triggering a buffer overflow.