Vulnerability Note VU#474969

Apple Macintosh OS X fails to properly mount WebDAV filesystems

Overview

A vulnerability in the way that Apple Macintosh OS X mounts WebDAV filesystems could allow a local attacker to execute commands with elevated privileges.

I. Description

Web-based Distributed Authoring and Versioning (WebDAV) is a set of extensions to the HTTP protocol which allows collaborative editing and management of web resources on remote servers. Apple Macintosh OS X contains a vulnerability that could be exploited when it attempts to mount WebDAV filesystems that may allow a local attacker to execute commands with elevated privileges. According to Apple Security Update 2007-004:

When mounting a WebDAV filesystem, the load_webdav program may be launched without properly cleaning the environment. This may allow a local user to create files or execute commands with system privileges. This update addresses the issue by cleaning the environment prior to executing commands.

II. Impact

A local attacker may be able to execute commands with elevated privileges.

III. Solution

Apply Updates from Apple

Apple has addressed this vulnerability with the updates included in Apple Security Update 2007-004.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Apple Computer, Inc.	Vulnerable	20-Apr-2007

References

http://docs.info.apple.com/article.html?artnum=305391

Credit

This vulnerability was reported in Apple Security Update 2007-004.

This document was written by Chris Taschner.

Other Information

Date Public:	2007-04-19
Date First Published:	2007-04-20
Date Last Updated:	2007-04-20
CERT Advisory:
CVE-ID(s):	CVE-2007-0747
NVD-ID(s):	CVE-2007-0747
US-CERT Technical Alerts:
Metric:	3.64
Document Revision:	17

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Produced 2007 by US-CERT, a government organization
Disclaimers and copyright information

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