About the security content of iPod touch v2.1

This document describes the security content of iPod touch v2.1.

For the protection of our customers, Apple does not disclose, discuss or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To find out more about Apple Product Security, see the Apple Product Security website.

For information about the Apple Product Security PGP Key, see "How to use the Apple Product Security PGP Key."

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To find out about other Security Updates, see "Apple Security Updates".

iPod touch v2.1

• Application Sandbox

  CVE-ID: CVE-2008-3631

  Available for: iPod touch v2.0 to v2.0.2

  Impact: An application may be able to read another application's files

  Description: The Application Sandbox does not properly enforce access restrictions between third-party applications. This may allow a third-party application to read files in another third-party application's sandbox and lead to the disclosure of sensitive information. This update addresses the issue by enforcing the proper access restrictions between application sandboxes. Credit to Nicolas Seriot of Sen:te and Bryce Cogswell for reporting this issue. This issue does not affect iPod touch versions prior to v2.0.

• CoreGraphics

  CVE-ID: CVE-2008-1806, CVE-2008-1807, CVE-2008-1808

  Available for: iPod touch v1.1 to v2.0.2

  Impact: Multiple vulnerabilities in FreeType v2.3.5

  Description: Multiple vulnerabilities exist in FreeType v2.3.5, the most serious of which may lead to arbitrary code execution when accessing maliciously crafted font data. This update addresses the issue by incorporating the security fixes from version 2.3.6 of FreeType. Further information is available via the FreeType site at http://www.freetype.org/

• mDNSResponder

  CVE-ID: CVE-2008-1447

  Available for: iPod touch v1.1 to v2.0.2

  Impact: mDNSResponder is susceptible to DNS cache poisoning and may return forged information

  Description: mDNSResponder provides translation between host names and IP addresses for applications that use its unicast DNS resolution API. A weakness in the DNS protocol may allow a remote attacker to perform DNS cache poisoning attacks. As a result, applications that rely on mDNSResponder for DNS may receive forged information. This update addresses the issue by implementing source port and transaction ID randomisation to improve resilience against cache poisoning attacks. Credit to Dan Kaminsky of IOActive for reporting this issue.

• Networking

  CVE-ID: CVE-2008-3612

  Available for: iPod touch v1.1 to v2.0.2

  Impact: Predictable TCP initial sequence numbers generation may lead to TCP spoofing or session hijacking

  Description: TCP initial sequence numbers are sequentially generated. Predictable initial sequence numbers may allow a remote attacker to create a spoofed TCP connection or insert data into an existing TCP connection. This update addresses the issue by generating random TCP initial sequence numbers.

• WebKit

  CVE-ID: CVE-2008-3632

  Available for: iPod touch v1.1 to v2.0.2

  Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

  Description: A use-after-free issue exists in WebKit's handling of CSS import statements. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved handling of document references.