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Vulnerability Note VU#575372

Apple Mac OS X AFP server vulnerable to an integer overflow when file sharing is enabled

Overview

A vulnerability in Apple Mac OS X AFP server may allow a remote attacker to execute arbitrary code or cause a denial-of-service condition on an affected system.

I. Description

The AFP (Apple Filing Protocol) service allows Apple Mac OS clients to remotely access files from a server. Apple's Mac OS X AFP server contains an unspecified integer overflow that can be exploited by a remote authenticated user to execute arbitrary code or cause a denial-of-service condition by crashing the affected service. Apple states that any Mac OS X system with AFP server enabled is vulnerable; however, AFP server is not enabled by default on Apple Mac OS X.

II. Impact

A remote authenticated attacker may be able to execute arbitrary code or cause a denial-of-service condition by crashing the service. The attacker-supplied code would be executed with system privileges.

III. Solution

Apply an update

Apple has addressed this issue in Security Update 2006-004.

Workaround

Disable file sharing if it is not required. File sharing can be disabled in the "Sharing" settings of system preferences.

Systems Affected

VendorStatusDate NotifiedDate Updated
Apple Computer, Inc.Vulnerable4-Aug-2006

References


http://docs.info.apple.com/article.html?artnum=304063
http://secunia.com/advisories/21253/

Credit

Thanks to Apple Product Security for reporting this vulnerability. Apple, in turn, credits Dino Dai Zovi of Matasano Security with reporting this issue to them.

This document was written by Katie Washok.

Other Information

Date Public:2006-08-01
Date First Published:2006-08-04
Date Last Updated:2006-09-18
CERT Advisory: 
CVE-ID(s):CVE-2006-1473
NVD-ID(s):CVE-2006-1473
US-CERT Technical Alerts: 
Metric:5.13
Document Revision:24

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