August 2009

ID: 3876
Date: 03/08/2009

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Title: 3876 - APPLE-SA-2009-07-31-1 Advisory concerning iPhone OS 3.0.1
Platform level affected:Hardware
Hardware components affected:Telephony
Remediation Summary:Update your copy of the software with the download available from the supplier.
Vendors affected:Apple
Applications affected:iPhone
Adversity source: Unknown
Attack Vector: Vulnerability exploitation
Virulence: Proof of Concept
Warning Status: Imminent
Potential Damage: Remote execution/modification
Possible Duration: Unknown
Availability of fix: Available
Type of fix: Patch
Source: Apple
Reliability of source: Trusted
Source URL: www.apple.com/itunes/
Abstract: This advisory details the release of iPhone OS 3.0.1 to address a vulnerability concerning maliciously crafted SMS messages.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-2009-07-31-1 iPhone OS 3.0.1

iPhone OS 3.0.1 is now available and addresses the following:

CoreTelephony
CVE-ID:  CVE-2009-2204
Available for:  iPhone OS 1.0 through iPhone OS 3.0
Impact:  Receiving a maliciously crafted SMS message may lead to an unexpected service interruption or arbitrary code execution
Description:  A memory corruption issue exists in the decoding of SMS messages. Receiving a maliciously crafted SMS message may lead to an unexpected service interruption or arbitrary code execution. This update addresses the issue through improved error handling. Credit to Charlie Miller of Independent Security Evaluators, and Collin Mulliner of Fraunhofer SIT for reporting this issue.

Installation note:

This update is only available through iTunes, and will not appear in your computer's Software Update application, or in the Apple Downloads site. Make sure you have an internet connection and have installed the latest version of iTunes from www.apple.com/itunes/

iTunes will automatically check Apple's update server on its weekly schedule. When an update is detected, it will download it. When the iPhone is docked, iTunes will present the user with the option to install the update. We recommend applying the update immediately if possible. Selecting "don't install" will present the option the next time you connect your iPhone.

The automatic update process may take up to a week depending on the day that iTunes checks for updates. You may manually obtain the update via the "Check for Update" button within iTunes. After doing this, the update can be applied when your iPhone is docked to your computer.

To check that the iPhone has been updated:

* Navigate to Settings
* Select General
* Select About. The version after applying this update will be
"3.0.1 (7A400)" or later

Information will also be posted to the Apple Security Updates web site: http://support.apple.com/kb/HT1222

This message is signed with Apple's Product Security PGP key, and details are available at:
https://www.apple.com/support/security/pgp/

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