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.

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.

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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.

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Solution

Apply an update

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

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Workaround

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

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Vendor Information

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Apple Computer, Inc. __ Affected

Notified: August 02, 2006 Updated: August 04, 2006

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please see Apple Security Update 2006-004 for details on updates.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23575372 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://docs.info.apple.com/article.html?artnum=304063&gt;
• <http://secunia.com/advisories/21253/&gt;

Acknowledgements

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

CVE IDs:	CVE-2006-1473
Severity Metric:	5.13 Date Public: