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TitanFTP Server COMB directory traversal

Accensus Security Advisory L-01 TitanFtp Server Arbitrary File Download/Delete



Product: TitanFTPd

Security-Risk: high

Remote-Exploit: maybe, assuming anonymous ftp access

Local-Exploit: yes

Vendor URL: http://www.southrivertech.com/

Found By: Bill Finlayson


Affected: Versions 8.10.1125 and likely previous

Issue:  the comb command is susceptible to a directory traversal attack which will allow downloading of arbitrary files on the server and deletion of arbitrary files on the server

Details: quote comb a ..//..//..//..//b
puts contents of 'b' in the file in the users home directory called 'a' and then deletes file b

Status: Submitted to Vendor 6/14/10 fixed 6/15/10