iDefense Security Intelligence

Apple Mac OS X Archive Utility Heap Memory Corruption Vulnerability

12.10.14

BACKGROUND

Apple Mac OS is a series of graphical user interface operating systems distrubuted by Apple. For more information, see the vendor's site found at the following link:

https://www.apple.com/osx/

DESCRIPTION

Remote exploitation of a memory corruption vulnerability in Archive Utility as packaged with Apple Inc.'s Mac OS X version 10.9.1 could allow an attacker to execute arbitrary code in the security context of the currently logged-in user.

A memory corruption issue exists in within the copyfile library. The vulnerability can be triggered by supplying the Archive Utility with a malformed AppleDouble file. AppleDouble files are a type of archive file that contains meta data related to the files contained within the archive.

ANALYSIS

Exploitation of this issue allows an attacker to execute arbitrary code in the security context of the logged-in user. An attacker would need to either host a website that serves up the maliciously crafted AppleDouble .zip file to Safari users upon visiting the site. In this scenario, Safari would automatically download and unzip the file using the Archive Utility without any further user interaction requirements. Alternatively, an attacker could use other forms of communication to transmit the file such as attaching the file as an e-mail attachment.

DETECTION

iDefense has confirmed the existence of this issue on Apple Inc.'s Mac OS X 10.9.1.

OS X Mavericks prior to 10.9.4, OS X Lion 10.7.5, OS X Lion Server 10.7.5, and OS X Mountain lion 10.8.5 are vulnerable.

WORKAROUND

iDefense is currently unaware of any workaround for this issue.

VENDOR RESPONSE

Information about non-directly downloadable vendor updates can be found by clicking the URLs shown.

http://support.apple.com/kb/HT1222

CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2014-1370 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.

DISCLOSURE TIMELINE

04/14/2014 Initial Vendor Notification
04/14/2014 Initial Vendor Reply
12/10/2014 Coordinated Public Disclosure

CREDIT

This vulnerability was reported to iDefense by Chaitanya.

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LEGAL NOTICES

Copyright © 2014 Verisign, 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 Verisign. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customer service 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.

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