Vulnerability Note VU#869548

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.

I. 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.

II. Impact

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

III. Solution

Apply a patch.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Apple Computer Inc.	Vulnerable	19-May-2003

References

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

Credit

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

Date Public:	2003-05-19
Date First Published:	2003-05-19
Date Last Updated:	2003-05-19
CERT Advisory:
CVE-ID(s):	CAN-2003-0242
NVD-ID(s):	CAN-2003-0242
US-CERT Technical Alerts:
Severity Metric:	18.00
Document Revision:	4

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