TITLE:
iTunes Shared Music Potential Denial of Service

SECUNIA ADVISORY ID:
SA17204

VERIFY ADVISORY:
http://secunia.com/advisories/17204/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
>From local network

SOFTWARE:
iTunes 6.x
http://secunia.com/product/5882/

DESCRIPTION:
Seth Fogie has reported a security issue in iTunes, which potentially
can be exploited by malicious people to cause a DoS (Denial of
Service).

The security issue is caused due to iTunes failing to authenticate
the source of shared music lists received via multicast. This can be
exploited via a MDNS packet with spoofed source IP address to delete
the list of music shared by other users from multiple users' iTunes
and thereby potentially causing a DoS. It is also possible to modify
the name of entries in the list via specially-crafted packets.

The security issue has been reported in version 6.0. Other versions
may also be affected.

SOLUTION:
Restrict use of the shared music feature to within trusted networks
only.

PROVIDED AND/OR DISCOVERED BY:
Seth Fogie

ORIGINAL ADVISORY:
http://www.airscanner.com/security/05101001_itunes.htm

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