search menu icon-carat-right cmu-wordmark

CERT Coordination Center

Apple Safari fails to properly handle form data in HTTP redirects

Vulnerability Note VU#128414

Original Release Date: 2004-08-16 | Last Revised: 2004-08-16


There is a vulnerability in the way Safari handles form data that may expose sensitive information when the forward/backward buttons are used.


Apple Safari is a web browser available for the Mac OS X operating system. A vulnerability exists in the way Safari handles web form data. When a web form is submitted to a server using the POST method and the server returns an HTTP redirect to a GET method URL, Safari may re-POST that data to the GET method URL. It has been reported that this condition occurs when the forward/backward buttons are used. No further information was provided on this vulnerability.


A user's form data could be disclosed to a remote server.


Apple has released a patch to address this vulnerability. For further details, please see the Apple Security Advisory (Security Updates for Mac OS X 10.3.5).

Vendor Information


Apple Computer Inc. Affected

Updated:  August 16, 2004



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.


Please refer to Apple's security updates for Mac OS X 10.3.5.

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

CVSS Metrics

Group Score Vector



This vulnerability was reported by Apple. In turn, Apple credits Rick Osterberg of Harvard University for reporting this issue.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2004-0743
Severity Metric: 1.45
Date Public: 2004-08-10
Date First Published: 2004-08-16
Date Last Updated: 2004-08-16 20:34 UTC
Document Revision: 10

Sponsored by CISA.