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Why would you specify "hs" for /root in the root policy? The "h" flag
will hide that path from the role. You probably want something like:
role root uG
subject / {
/ r
#
# (other filesystem paths and permissions here)
#
/root r
# capabilities, etc, here
-CAP_ALL
bind disabled
connect disabled
}
Replacing the object flag "h" with "hs" will still hide things. ;) In
the same way, changing from "x" to "rx" will still not allow you to write
to the file.
You might want to take a look at this[1] link...
[1] http://www.grsecurity.net/wiki/index.php/GrsecurityRBACObjModes
Hope that helps...
brant williams
FCAA CDCA 20BC 3925 D634 F5C4 7420 6784 4DEB 6002
On Sun, 23 Nov 2008, [EMAIL PROTECTED] wrote:
Date: Sun, 23 Nov 2008 10:48:51 +0100 (CET)
From: [EMAIL PROTECTED]
Reply-To: gentoo-hardened@lists.gentoo.org
To: gentoo-hardened@lists.gentoo.org
Subject: [gentoo-hardened] Grsecurity: Role flag "G" problem
Since I've upgraded to a kernel based on 2.6.27 (2.6.27-hardened-r1), some
error messages are logged every time I authenticate myself as root.
"
Nov 23 10:09:44 hostname grsec: (root:U:/sbin/gradm) denied access to
hidden file /root by /sbin/gradm[gradm:7187] uid/euid:0/0 gid/egid:0/0,
parent /bin/bash[bash:7033] uid/euid:0/0 gid/egid:0/0
"
Role flag "G" is specified for root in order to make this user able to
authenticate using gradm. Some directories - including boot - are hidden.
No matter if I replace "h" to "hs" for role root, these messages still get
logged. If I try to create a policy for gradm, grsec reports, that I've
tried to modify an already existing instance - which is probably included
because Role flag "G", but the exact contents are hidden.
This behavior appeared recently.
Did I miss something?
Any ideas on this are greatly appreciated.
Is it discouraged to authenticate using gradm while logged in as root?
Regards,
Dw.
--
dr Tóth Attila, Radiológus Szakorvos jelölt, 06-20-825-8057, 06-30-5962-962
Attila Toth MD, Radiologist in Training, +36-20-825-8057, +36-30-5962-962
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