Serv-U up to 5.2 Denial of Service
Serv-U FTP server is a secure, advanced FTP server for Windows. However, like
most programs, it is not completely bugfree.
I (and maybe more people with me) found this bug some time ago. It can be
triggered as *every* user that can log in, anonymous included, and exists in
possibly every version. (At least 4.x and 5.x series).
The exploit might be a cliché but it might threaten (hosting and other)
companies that use this FTP server.
Following commands will trigger the crash:
STOU COM1
STOU LPT1
STOU PRN
STOU AUX
However, "STOU NUL" does NOT work.
Greetings,
Patrick