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Date : Wed, 10 Sep 2008 11:00:27 +0200
Type : VULN
Sujet : CERT-Renater : 2008/VULN340 (APPLE: iPod touch v2.1 fixes arbitrary code execution vulnerabilities)
====================================================================                                    CERT-Renater

                         Note d'Information No. 2008/VULN340
_____________________________________________________________________

DATE                      : 10/09/2008

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running iPod touch.

======================================================================

APPLE-SA-2008-09-09 iPod touch v2.1

iPod touch v2.1 is now available and addresses the following issues:

Application Sandbox
CVE-ID:  CVE-2008-3631
Available for:  iPod touch v2.0 through 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 through 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 through 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 randomization 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 v2.0 through 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. This issue does not
affect iPod touch versions prior to v2.0.

WebKit
CVE-ID:  CVE-2008-3632
Available for:  iPod touch v1.1 through 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.

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 iPod touch 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 iPod touch.

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 iPod touch is docked to
your computer.

To check that the iPod touch has been updated:

* Navigate to Settings
* Select General
* Select About.  The version after applying this update will be
"2.1 (5F135)" 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:
http://www.apple.com/support/security/pgp/

======================================================================

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