Synopsis :

Arbitrary code can be executed on the remote host through TFTPF.

Description :

The remote host is running a version of TFTPD installed by the Remote
Installation Service that allows everyone to overwrite files on the
remote host.

An attacker may exploit this flaw to replace SYSTEM files and execute
arbitrary code on this host.

Solution :

Microsoft has released a set of patches for Windows 2000 :

http://technet.microsoft.com/en-us/security/bulletin/ms06-077

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false