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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0346 -- [SCO] SCO UnixWare pkgadd Directory Traversal Vulnerability 4 April 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: pkgadd Publisher: iDEFENSE Operating System: SCO Impact: Root Compromise Access: Existing Account CVE Names: CVE-2008-0310 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=676 - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 04.03.08 http://labs.idefense.com/intelligence/vulnerabilities/ Apr 03, 2008 I. BACKGROUND SCO UnixWare is a UNIX operating system that runs on many OEM platforms. The pkgadd command is used to install packages on the system. More information about the product is available from the URL shown below. http://www.sco.com/products/unixware714/ II. DESCRIPTION Local exploitation of a directory traversal vulnerability within the pkgadd program distributed with SCO Group Inc's UnixWare operating system allows attackers to gain root privileges. By setting an environment variable to a value containing directory traversal sequences, such as "../", an attacker can cause the program to create or append to arbitrary files on the system. III. ANALYSIS Exploitation allows attackers gain root privileges. Access to execute arbitrary shell commands is required to exploit this issue. By targeting specific system files, an attacker can add accounts or otherwise facilitate privilege escalation. IV. DETECTION iDefense confirmed the existence of this vulnerability within version 7.1.4 of UnixWare with all patches available as of August 27th, 2007 installed. Previous versions are suspected to be vulnerable. V. WORKAROUND Changing the permissions of the pkgadd command to only allow root to execute this program will prevent exploitation of this vulnerability. # chmod 700 /usr/sbin/pkgadd VI. VENDOR RESPONSE SCO has addressed this vulnerability by releasing patches. For more information, consult their advisory at the following URL. http://www.sco.com/support/update/download/release.php?rid=324 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2008-0310 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 09/04/2007 Initial vendor notification 10/30/2007 Initial vendor response 04/03/2008 Coordinated public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2008 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. - --------------------------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 iQCVAwUBR/V27Sh9+71yA2DNAQLDIAP/ToIuI+hIxyesbFjbytMjWVTI7BRaAt2z 9AEwtrLBSaIXOoglI/gBu3/Sa5t3cjE+O65+5kpN0qi0oyCjaG++vl2GMeNahz74 q3gd5dB4DAszq5LovKhtbWXioYJ3h6T8w31LAjY1eeKQBxzCtB+Mgy7OLgkJCbeu yZ6JnlZlfLw= =x5MJ -----END PGP SIGNATURE-----