Apple released iTunes v8.1 as security update
A vulnerability was reported in Apple iTunes. A remote user can cause denial of service conditions on the target 
system as well as sending a Digital Audio Protocol (DAAP) message containing a specially crafted Content-Length parameter value to cause the target iTunes application to enter an infinite loop.
A vendor has issued a fix version (8.1) as a solution, available at http://www.apple.com/itunes/download/
Xiaopeng Zhang, Zhenhua Liu and Junfeng Jia of Fortinet’s FortiGuard Global Security Research Team reported the under-mentioned issues:
CVE-ID: CVE-2009-0016
Available for:
Windows XP or Vista
Impact:
Sending a maliciously crafted DAAP message may lead to a denial of service.
Description:
An infinite loop exists in the handling of iTunes Digital Audio Access Protocol (DAAP) messages. Sending a message containing a maliciously crafted Content-Length parameter in the DAAP header may lead to a denial of service. This update addresses the issue by performing additional validation of DAAP messages. This issue does not affect Mac OS X systems.
CVE-ID: CVE-2009-0143
Available for:
Mac OS X v10.4.10 or later, Mac OS X Server v10.4.10 or later, Windows XP or Vista
Impact:
Subscribing to a malicious podcast may lead to the disclosure of iTunes username and password.
Description:
A design issue exists in the iTunes podcast feature. A subscription to a malicious podcast may cause an authentication dialog to be presented to the user. This dialog may entice the user to send iTunes credentials to the podcast server. This update addresses the issue by clarifying the origin of the authentication request in the dialog.
