About the security content of iOS 3.1.3 and iOS 3.1.3 for iPod touch

This document describes the security content of iOS 3.1.3 and iOS 3.1.3 for iPod touch.

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 more about other Security Updates, see “Apple Security Updates”.

iOS 3.1.3 and iOS 3.1.3 for iPod touch

• CoreAudio

  CVE-ID: CVE-2010-0036

  Available for: iOS 1.0 to 3.1.2, iOS for iPod touch 1.1 to 3.1.2

  Impact: playing a maliciously crafted MP4 audio file may lead to an unexpected application termination or arbitrary code execution

  Description: a buffer overflow exists in the handling of MP4 audio files. Playing a maliciously crafted MP4 audio file may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking. Credit to Tobias Klein of trapkit.de for reporting this issue.

• ImageIO

  CVE-ID: CVE-2009-2285

  Available for: iOS 1.0 to 3.1.2, iOS for iPod touch 1.1 to 3.1.2

  Impact: viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution

  Description: a buffer underflow exists in ImageIO’s handling of TIFF images. Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved bounds checking.

• Recovery Mode

  CVE-ID: CVE-2010-0038

  Available for: iOS 1.0 to 3.1.2, iOS for iPod touch 1.1 to 3.1.2

  Impact: a person with physical access to a locked device may be able to access the user’s data

  Description: a memory corruption issue exists in the handling of a certain USB control message. A person with physical access to the device could use this to bypass the passcode and access the user’s data. This issue is addressed through improved handling of the USB control message.

• WebKit

  CVE-ID: CVE-2009-3384

  Available for: iOS 1.0 to 3.1.2, iOS for iPod touch 1.1 to 3.1.2

  Impact: accessing a maliciously crafted FTP server could result in an unexpected application termination, information disclosure or arbitrary code execution

  Description: multiple input validation issues exist in WebKit’s handling of FTP directory listings. Accessing a maliciously crafted FTP server may lead to information disclosure, unexpected application termination or execution of arbitrary code. This update addresses the issues through improved parsing of FTP directory listings. Credit to Michal Zalewski of Google Inc. for reporting these issues.

• WebKit

  CVE-ID: CVE-2009-2841

  Available for: iOS 1.0 to 3.1.2, iOS for iPod touch 1.1 to 3.1.2

  Impact: Mail may load remote audio and video content when remote image loading is disabled

  Description: when WebKit encounters an HTML 5 Media Element pointing to an external resource, it does not issue a resource load callback to determine if the resource should be loaded. This may result in undesired requests to remote servers. As an example, the sender of an HTML-formatted email message could use this to determine that the message was read. This issue is addressed by generating resource load callbacks when WebKit encounters an HTML 5 Media Element.