From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] devproc noteid changing for none
Date: Thu, 2 Jan 2014 16:35:48 -0500 [thread overview]
Message-ID: <485d71a18a3e7bfe4849015183f99f06@brasstown.quanstro.net> (raw)
In-Reply-To: <87038489650152a926dc7a912f59429e@felloff.net>
On Thu Jan 2 16:33:33 EST 2014, cinap_lenrek@felloff.net wrote:
> a process running as "none" can only access its own (calling) process.
>
> but noteid write allows it to change the noteid of its own process to
> a nother group (also running as none) which allows it to send notes
> to that group.
>
> this has to be prevented.
; cd /proc/$pid; pwd
/proc/75189
; cat noteid
76810 ;
; auth/none
; cd /proc/$pid; pwd
/proc/75192
; cat noteid
cat: can't open noteid: 'noteid' permission denied
- erik
next prev parent reply other threads:[~2014-01-02 21:35 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-02 21:17 cinap_lenrek
2014-01-02 21:22 ` erik quanstrom
2014-01-02 21:29 ` cinap_lenrek
2014-01-02 21:32 ` cinap_lenrek
2014-01-02 21:35 ` erik quanstrom [this message]
2014-01-02 21:41 ` cinap_lenrek
2014-01-02 21:43 ` erik quanstrom
2014-01-02 21:55 ` cinap_lenrek
2014-01-02 22:31 ` erik quanstrom
2014-01-02 22:47 ` erik quanstrom
2014-01-02 22:56 ` cinap_lenrek
2014-01-02 22:53 ` cinap_lenrek
2014-01-02 22:57 ` erik quanstrom
2014-01-02 23:01 ` cinap_lenrek
2014-01-02 23:04 ` erik quanstrom
2014-01-02 23:05 ` cinap_lenrek
2014-01-02 23:09 ` cinap_lenrek
2014-01-02 23:17 ` cinap_lenrek
2014-01-02 23:28 ` erik quanstrom
2014-01-03 0:23 ` erik quanstrom
2014-01-03 0:32 ` cinap_lenrek
2014-01-03 1:16 ` erik quanstrom
2014-01-03 1:23 ` cinap_lenrek
2014-01-03 1:31 ` erik quanstrom
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