From labs-no-reply@idefense.com Thu Mar 2 17:31:25 2006 From: "labs-no-reply@idefense.com" To: bugtraq@securityfocus.com, vulnwatch@vulnwatch.org, full-disclosure@lists.grok.org.uk Date: Thu, 02 Mar 2006 17:31:03 -0500 Subject: [Full-disclosure] iDefense Security Advisory 03.02.06: Apple MacOS X BOMArchiveHelper Directory Traversal Vulnerability Apple MacOS X BOMArchiveHelper Directory Traversal Vulnerability iDefense Security Advisory 03.02.06 http://www.idefense.com/intelligence/vulnerabilities/display.php?id=399 March 02, 2006 I. BACKGROUND Mac OS X is an operating system for the Apple family of microcomputers. More information is available at the following link: http://www.apple.com/macosx/ II. DESCRIPTION Remote exploitation of a directory traversal vulnerability in Apple Computer Inc.'s MacOS X could allow attackers to overwrite arbitrary files with user-supplied contents. III. ANALYSIS Exploitation could allow a remote attacker to overwrite a file with user-supplied contents. This can be leveraged to gain code execution on the target machine by overwriting executable files such as login scripts. IV. DETECTION iDefense has confirmed the existence of this vulnerability in MacOS X 10.4.2. Versions 10.4.5 and earlier of the 10.4.x family and versions 10.3.9 of the 10.3.x family of both Mac OS X and Mac OS X Server are vulnerable. V. WORKAROUND To prevent exploitation from occurring through the Safari web browser, disable the 'Open safe file types' option in Safari. To achieve this, within Safari choose Preferences, then choose General, then uncheck the 'Open safe file types' option. VI. VENDOR RESPONSE Apple has released Security Update 2006-001 to address this issue: http://docs.info.apple.com/article.html?artnum=303382 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2006-0391 to this issue. VIII. DISCLOSURE TIMELINE This issue was independently discovered by Stéphane Kardas of CERTA and reported to the vendor. 03/02/2006 Public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp Free tools, research and upcoming events http://labs.idefense.com X. LEGAL NOTICES Copyright © 2006 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 email 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. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/