3cdaemon tftp server DOS vulnerability
AUTHOR:
(Fortinet, inc)
Ning Wang<nwang_at_scn_com_cn>
DATE:
15/12/2004
PRODUCTS:
3cdaemon version 2.0 revision 10
Description:
3com product 3cdaemon is one of the most popular used tools to achieve files
backup and upgrade.
Detail:
3com tftp daemon exist a vulnerability, which will encounter a fatal error
when recieves too long request with opmode 0x01.
based on the testing report, any user supplied command string whose length of
its filename partion exceeds 512 bytes will easily duplicate this error ,and
also Denial of service happends.
According to the limitation of the File Length is less than 188 bytes on
cisco platform.