SpoonFTP Buffer Overflow Vulnerabilities

Type securityvulns
Reporter Securityvulns
Modified 2001-05-31T00:00:00


Strumpf Noir Society Advisories ! Public release ! <--#

-= SpoonFTP Buffer Overflow Vulnerabilities =-

Release date: Thursday, May 31, 2001


SpoonFTP is an ftp server from the hand of the makers of SpoonProxy for the various MS Windows incarnations.

SpoonFTP is available from vendor Pi-Soft's website: http://www.pi-soft.com


The SpoonFTP server doesn't correctly apply boundary checks on the 'CWD' and 'LIST' commands. Issueing one of these to the server followed by respectively 530 and 531 bytes of data or more will cause the server to die.

Altough in the majority of the attempts internal errors will kill the SpoonFTP process before any data can be passed on to the stack, it is possible to use this to overwrite eip and execute arbitrary code on the target machine.



Vendor has been notified and has verified the existence of these problems. SpoonFTP v1.0.0.13 has been released to deal with them. Users are encouraged to upgrade.

This was tested against SpoonFTP v1.0.0.12 on Win2k.


Free sk8! (http://www.freesk8.org)

SNS Research is rfpolicy (http://www.wiretrip.net/rfp/policy.html) compliant, all information is provided on AS IS basis.

EOF, but Strumpf Noir Society will return!