Date: Wed, 7 Sep 2005 15:37:48 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: talonz <talonz@gmail.com> Cc: freebsd-security@freebsd.org Subject: Re: ee using 99% cpu after user ssh session terminates abnormaly Message-ID: <20050907223748.GB563@odin.ac.hmc.edu> In-Reply-To: <431F6941.20006@gmail.com> References: <431F6941.20006@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--9zSXsLTf0vkW971A Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 08, 2005 at 08:27:13AM +1000, talonz wrote: > Recently i have been using a dialup 56k account to access the net > and have noticed that when my ssh session times out and I am editing > a file in ` ee ' the system goes to 99% cpu usage and stays like > this till the pid is killed. > This is a standard user account (not root/su) >=20 > Would a user be able to create a denial of service condition > on the remote system using this bug? No more then they could with the ablity to run any other program that loops. > (sorry if this is posted to the incorrect list) >=20 > Details: >=20 > System - FreeBSD 5.4-RELEASE-p5 >=20 > ee using 99% cpu after user session terminates abnormaly > PID reported by top. >=20 > The output from ps looks like this >=20 > [root@blah][~]$ ps aux| grep 70464 > someuser 70464 93.5 0.1 1920 1372 p1- R 7:09PM 687:07.27 ee file I can't seem to trigger this bug on a 7.0 machine either by killing the client or using tcpdrop to kill the tcp session. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --9zSXsLTf0vkW971A Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFDH2u6XY6L6fI4GtQRArkNAJ9SOXr8aBvKwWuL/SoIJAYHDK7CkwCgzRJ1 /HIL+ahXnwgKMY1+djjrts8= =LzZd -----END PGP SIGNATURE----- --9zSXsLTf0vkW971A--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050907223748.GB563>