Apple Safari fails to properly handle archive files containing symbolic links

2006-05-12T00:00:00
ID VU:519473
Type cert
Reporter CERT
Modified 2006-05-12T00:00:00

Description

Overview

Apple Safari fails to properly handle archive files that contain symbolic links, which may allow a remote, unauthenticated attacker to execute arbitrary code.

Description

Safari

Apple Safari is a web browser that comes with the Mac OS X operating system.

Symbolic links

Symbolic links are references to files and folders.

"Safe" files

By default, Safari will automatically open "safe" file types, such as pictures, movies, and archive files, including ZIP files. If the contents of an archive file are also considered safe, then Safari will automatically open the contents after the archive is extracted.

The problem

Safari can automatically execute the symbolic link target when it is automatically extracted.


Impact

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


Solution

Apply an update
Apply Apple Security Update 2006-003. With this update, Safari will not resolve downloaded symbolic links.


Disable "Open 'safe' files after downloading"

Disable the option "Open 'safe' files after downloading," as specified in the Securing Your Web Browser document. This will help prevent automatic exploitation of this and other vulnerabilities.


Systems Affected

Vendor| Status| Date Notified| Date Updated
---|---|---|---
Apple Computer, Inc.| | 12 May 2006| 12 May 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics

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

References

  • <http://docs.info.apple.com/article.html?artnum=303737>
  • <http://www.us-cert.gov/reading_room/securing_browser/#sgeneral>

Credit

Thanks to Apple Product Security for reporting this vulnerability.

This document was written by Will Dormann.

Other Information

  • CVE IDs: CVE-2006-1457
  • Date Public: 11 May 2006
  • Date First Published: 12 May 2006
  • Date Last Updated: 12 May 2006
  • Severity Metric: 16.07
  • Document Revision: 6