Apple Mac OS X IPSec mechanism fails to handle certain incoming security policies that match by port

Overview

Apple’s Mac OS X IPSec implementation does not properly filter certain types of IP traffic.

Description

Apple Mac OS X contains an implementation of the IP Security Protocol (IPSec). A vulnerability in this implementation may allow a remote attacker to exchange traffic with a host that should not be reachable. For further details, please see Apple Security Update Article ID 61798.

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Impact

A remote attacker may be able to bypass IPSec ACLs and reach a system that should not be reachable.

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Solution

Apply a patch.

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Vendor Information

869548

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Apple Computer Inc. __ Affected

Updated: May 19, 2003

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 <http://docs.info.apple.com/article.html?artnum=61798&gt;.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23869548 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://docs.info.apple.com/article.html?artnum=61798&gt;
• <http://www.ietf.org/html.charters/ipsec-charter.html&gt;
• <http://www.secunia.com/advisories/8798/&gt;
• <http://www.apple.com/macosx/&gt;

Acknowledgements

The CERT/CC thanks Apple for providing Apple Security Update Article ID 61798 upon which this document is based.

This document was written by Ian A Finlay.

Other Information

CVE IDs:	CVE-2003-0242
Severity Metric:	18.00 Date Public: