Vulnerability Note VU#734032

Apple Mac OS X Security Framework Secure Transport may not negotiate the best cipher available

Original Release date: 30 Nov 2006 | Last revised: 30 Nov 2006

Overview

Apple Mac OS X Security Framework Secure Transport may not negotiate the best cipher available. This vulnerability may allow traffic to be weakly encrypted.

Description

Secure Transport refers to Apple’s implementation of SSL and TLS that is used by Mac OS X to create secure connections over TCP/IP connections. According to Apple Security Update 2006-007:

    Due to the order they are evaluated, it is possible for Secure Transport to use a cipher that provides no encryption or authentication when better ciphers are available. Applications using Secure Transport through CFNetwork, such as Safari, are not affected by this issue on systems with Security Update 2006-006 or later. This issue does not affect systems using Mac OS X v10.4.8 and later

Impact

A remote, unauthenticated attacker may be able to observe the plaintext of traffic believed to be securely encrypted.

Solution

Apply Apple Updates
This issue is addressed by Apple Security Update 2006-007.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Apple Computer, Inc.Affected-29 Nov 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

This issue was reported in Apple Security Update 2006-007. Apple credits Eric Cronin of gizmolabs for reporting this issue.

This document was written by Chris Taschner.

Other Information

  • CVE IDs: CVE-2006-4407
  • Date Public: 28 Nov 2006
  • Date First Published: 30 Nov 2006
  • Date Last Updated: 30 Nov 2006
  • Severity Metric: 10.94
  • Document Revision: 10

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.