From owner-freebsd-security@FreeBSD.ORG Sat Jul 31 12:55:59 2010 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 94E481065675 for ; Sat, 31 Jul 2010 12:55:59 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 11B4B8FC14 for ; Sat, 31 Jul 2010 12:55:58 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id o6VCfaB5033038 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 31 Jul 2010 15:41:36 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id o6VCfaZr089627; Sat, 31 Jul 2010 15:41:36 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id o6VCfaOE089626; Sat, 31 Jul 2010 15:41:36 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Sat, 31 Jul 2010 15:41:36 +0300 From: Kostik Belousov To: Selphie Keller Message-ID: <20100731124136.GN22295@deviant.kiev.zoral.com.ua> References: <235BB726E71747BA980A0EF60F76ED37@2WIRE304> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9j9z4uig7ElIUlwi" Content-Disposition: inline In-Reply-To: <235BB726E71747BA980A0EF60F76ED37@2WIRE304> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_20, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-security@freebsd.org Subject: Re: kernel module for chmod restrictions while in securelevel one or higher X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 31 Jul 2010 12:55:59 -0000 --9j9z4uig7ElIUlwi Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jul 30, 2010 at 11:18:39PM -0700, Selphie Keller wrote: > Kernel module for chmod restrictions while in securelevel one or higher: > http://gist.github.com/501800 (fbsd 8.x) >=20 > Was looking at the new recent sendfile/mbuf exploit and it was using a > shellcode that calls chmod syscall to make a setuid/setgid binary. However Can you point to the exploit (code) ? --9j9z4uig7ElIUlwi Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkxUGgAACgkQC3+MBN1Mb4j7XgCeN3eeGinQ28eRSz/KRXPcL/uW E0sAoOyFDWeOQasKxsr8aMgjahuKr7iP =fWxs -----END PGP SIGNATURE----- --9j9z4uig7ElIUlwi--