Apple Mac OS X PPP driver fails to properly validate PADI packets

Overview

The Apple Mac OS X PPP driver fails to properly handle PPPoE Active Discovery Initiation (PADI) packets. This vulnerability may allow a remote attacker to execute arbitrary code with system privileges.

Description

The Apple Mac OS X PPP driver fails to properly handle PADI packets allowing a buffer overflow to occur. An attacker on a local network may be able to trigger the overflow by sending a specially crafted packet to a vulnerable system that has PPPoE enabled.

Note Apple states that PPPoE functionality is disabled by default.

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Impact

This vulnerability may allow a remote attacker to execute arbitrary code with system privileges.

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Solution

Apply Apple Updates
Apple advises all users to apply Apple Security Update 2006-007, as it fixes this and other critical security flaws.

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Vendor Information

870960

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Apple Computer, Inc. __ Affected

Updated: November 29, 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 refer to <http://docs.info.apple.com/article.html?artnum=304829&gt;.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23870960 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://docs.info.apple.com/article.html?artnum=304829&gt;
• <http://secunia.com/advisories/23155/&gt;
• <http://labs.musecurity.com/advisories/MU-200611-01.txt&gt;

Acknowledgements

This vulnerability was reported in Apple Security Update 2006-007. Apple credits Mu Security with reporting this vulnerability.

This document was written by Jeff Gennari based on information from Apple and Mu Security.

Other Information

CVE IDs:	CVE-2006-4406
Severity Metric:	13.23 Date Public: