ntsec: changing the everyone user

[Chris Rodgers]

OK. Here is an example of the way permissions leak out to "Everyone". I
create a new file, with no permissions granted to "other". Cygwin shows this
to have worked OK. Yet in actual fact there is an ACL there giving Everyone
some access rights. I usually choose not to have "Everyone" authorised to do
anything on my Windows NT/2000 boxes, using Authorised Users instead. This
way, without a valid login, you cannot get any information, including
usernames and ACLs.

How can I stop cygwin setting these ACLs?

[628 chris-mob /]$ umask
0007
[629 chris-mob /]$ touch delme
[630 chris-mob /]$ ls -al delme
-rw-rw----    1 Administ wheel           0 Sep 15 17:31 delme
[631 chris-mob /]$ getfacl delme
# file: delme
# owner: Administrator
# group: wheel
user::rw-
group::rw-
mask:rwx
other:---
[632 chris-mob /]$ cacls delme
C:\cygwin\delme CHRIS-MOB\Administrator:(special access:)
                                        STANDARD_RIGHTS_ALL
                                        DELETE
                                        READ_CONTROL
                                        WRITE_DAC
                                        WRITE_OWNER
                                        SYNCHRONIZE
                                        STANDARD_RIGHTS_REQUIRED
                                        FILE_GENERIC_READ
                                        FILE_GENERIC_WRITE
                                        FILE_READ_DATA
                                        FILE_WRITE_DATA
                                        FILE_APPEND_DATA
                                        FILE_READ_EA
                                        FILE_WRITE_EA
                                        FILE_READ_ATTRIBUTES
                                        FILE_WRITE_ATTRIBUTES

                BUILTIN\Administrators:(special access:)
                                       READ_CONTROL
                                       SYNCHRONIZE
                                       FILE_GENERIC_READ
                                       FILE_GENERIC_WRITE
                                       FILE_READ_DATA
                                       FILE_WRITE_DATA
                                       FILE_APPEND_DATA
                                       FILE_READ_EA
                                       FILE_WRITE_EA
                                       FILE_READ_ATTRIBUTES
                                       FILE_WRITE_ATTRIBUTES

                Everyone:(special access:)
                         READ_CONTROL
                         FILE_READ_EA
                         FILE_READ_ATTRIBUTES


[633 chris-mob /]$


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