Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.1595 Two Security Vulnerabilities in GNU tar May Lead to Files Being Overwritten, Execution of Arbitrary Code, or a Denial of Service (DoS) 4 December 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gtar Publisher: Sun Microsystems Operating System: Solaris OpenSolaris Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Denial of Service -- Remote with User Interaction Overwrite Arbitrary Files -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2007-4476 CVE-2007-4131 Reference: ESB-2007.1053 Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-273551-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Two Security Vulnerabilities in GNU tar (see gtar(1)) May Lead to Files Being Overwritten, Execution of Arbitrary Code, or a Denial of Service (DoS) _________________________________________________________________ Category : Security Release Phase : Workaround Bug Id : 6616278 Product : Solaris 9 Operating System Solaris 10 Operating System OpenSolaris Date of Workaround Release : 02-Dec-2009 Two security vulnerabilities in GNU tar (see gtar(1)): 1. Impact Two security vulnerabilities have been found in the GNU tar gtar(1) archiving program bundled with Solaris 9, Solaris 10 and OpenSolaris. The first issue is a directory traversal vulnerability that may allow a local or remote unprivileged user who provides a specially crafted archive to overwrite arbitrary files which the user executing gtar(1) has permission to modify. The second issue is a buffer overflow which may allow a local or remote unprivileged user who provides a specially crafted tar archive to execute arbitrary commands with the privileges of the user executing gtar(1) or to cause gtar(1) to crash. The ability to cause a program crash is a type of Denial of Service (DoS). Additional information regarding these issues is available at: * CVE-2007-4131 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4131 * CVE-2007-4476 at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4476 2. Contributing Factors These issues can occur in the following releases: SPARC Platform * Solaris 9 * Solaris 10 without patch 139099-03 * OpenSolaris based upon builds snv_01 through snv_115 x86 Platform * Solaris 9 * Solaris 10 without patch 139100-03 * OpenSolaris based upon builds snv_01 through snv_11 Note 1: OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. To determine the base build of OpenSolaris, the following command can be used: $ uname -v snv_86 Note 2: Solaris 8 does not include support for GNU tar utility and therefore is not impacted by these issues. 3. Symptoms There are no predictable symptoms that would indicate the described issues have been exploited on a system. 4. Workaround Until the patches for these issues can be applied, users should avoid using gtar(1) with archives from untrusted sources. 5. Resolution These issues are addressed in the following releases: SPARC Platform * Solaris 10 with patch 139099-03 or later * OpenSolaris based upon builds snv_116 or later x86 Platform * Solaris 10 with patch 139100-03 or later * OpenSolaris based upon builds snv_116 or later A final resolution is pending completion for Solaris 9. 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 2000-2009 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. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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 iD8DBQFLGE81NVH5XJJInbgRAmyYAJ4hlDYLWeGGnWyQYfY2mmaf09fCvwCfVNkk sZfnP3Tj2pWftO1Uw5DAm3E= =d/ij -----END PGP SIGNATURE-----