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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0740 -- [Solaris] Security Vulnerability in Solaris 10 Link Aggregation may Allow Local Users Total Access to Network Packets 9 October 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Solaris 10 Publisher: Sun Microsystems Operating System: Solaris 10 Impact: Access Confidential Data Provide Misleading Information Access: Existing Account Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102606-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 102606 * Synopsis: Security Vulnerability in Solaris 10 Link Aggregation may Allow Local Users Total Access to Network Packets * Category: Security * Product: Solaris 10 Operating System * BugIDs: 6364350 * Avoidance: Patch * State: Resolved * Date Released: 06-Oct-2006 * Date Closed: 06-Oct-2006 * Date Modified: 1. Impact A security vulnerability resulting from incorrect and insufficient permission checks in the default Solaris 10 configuration may allow a local unprivileged user to create a raw socket on a Solaris link aggregation, resulting in unrestricted access to network packets. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 10 without patch 118833-23 x86 Platform * Solaris 10 without patch 118855-19 Note: This issue does not affect Solaris 8 or Solaris 9. This issue only affects systems which have configured aggregations of network devices using dladm(1M) and enabled with ifconfig(1M). To determine if a system has configured one or more aggregations of network devices the following command can be run as the root user or a user with the sys_net_config privilege: # /usr/sbin/dladm show-aggr key: 1 (0x0001) policy: L4 address: 0:1:2:3:4:5 (auto) device address speed duplex link state bge1 0:1:2:3:4:5 100 Mbps full up attached bge2 0:1:2:3:4:5 100 Mbps full up attached bge3 0:1:2:3:4:5 100 Mbps full up attached # /usr/sbin/ifconfig aggr1 aggr1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 143 inet 192.29.67.199 netmask ffffff00 broadcast 192.29.67.255 ether 0:1:2:3:4:5 3. Symptoms There are no reliable symptoms that would show if this issue has been exploited to access network traffic or send spoofed packets using a network link aggregation. 4. Relief/Workaround To create a policy for local users that would not allow them total access, add an entry into the /etc/security/device_policy file by running the update_drv(1M) command as superuser with the following arguments: # /usr/sbin/update_drv -a -p 'read_priv_set=net_rawaccess write_priv_set=net _rawaccess' aggr 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 10 with patch 118833-23 or later x86 Platform * Solaris 10 with patch 118855-19 or later This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRSnVUyh9+71yA2DNAQL2WgP/UjCNIGA0jLvS2jWQs4PcTOdSYSMY0/C3 2sRcHr3SMFRuQDBja0N4EPgg3UoQkeGbnWM+pNwUL919tEKB80f6glXvVABBpP6K lNfl7MEMZa9pxgf9EBYVr+YQ80JvubQdCDw3WvlNK6B+H176/BLMSDrmy7JaY0Wo rPPOtO1qI70= =H+88 -----END PGP SIGNATURE-----