Vulnerability Note VU#737204

Xsan Filesystem fails to properly process path names

Original Release date: 21 Aug 2006 | Last revised: 21 Aug 2006


A buffer overflow vulnerability in Apple's Xsan product may allow a local attacker to run arbitrary code with root privileges or create a denial-of-service condition.


Xsan Filesystem

Xsan is a Storage Area Network (SAN) filesystem designed for use by Apple OS X and OS X Server operating systems.

The Problem
There is a buffer overflow vulnerability in the Xsan filesystem driver that may affect systems directly attached to Xsan. An authenticated user with write access to the filesystem may exploit this vulnerability by creating a file with a specially crafted path name.


A local, authenticated attacker may be able to execute arbitrary code with system privileges, or create a denial-of-service condition.


Apple has released Xsan Filesystem 1.4 to address this vulnerability.

Restrict Write Access
Only allowing trusted users write access to the Xsan Filesystem may mitigate this vulnerability. The Xsan Administrator's Guide has instructions on how to restrict a client to read-only access.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Apple Computer, Inc.Affected-21 Aug 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



This vulnerability was reported by Apple, who credit Andrew Wellington of The Australian National University for reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

  • CVE IDs: CVE-2006-3506
  • Date Public: 17 Aug 2006
  • Date First Published: 21 Aug 2006
  • Date Last Updated: 21 Aug 2006
  • Severity Metric: 0.31
  • Document Revision: 24


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