Apple Safari fails to properly handle form data in HTTP redirects

Overview

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

Description

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.

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Impact

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

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Solution

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).

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Vendor Information

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Updated: August 16, 2004

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 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](<mailto:[email protected]?Subject=VU%23128414 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://docs.info.apple.com/article.html?artnum=61798&gt;
• <http://www.securitytracker.com/alerts/2004/Aug/1010904.html&gt;
• <http://xforce.iss.net/xforce/xfdb/16944&gt;
• <http://secunia.com/advisories/12249/&gt;

Acknowledgements

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: