Apple iTunes up to 12.9.0 WebKit resource consumption

Summaryinfo

A vulnerability was found in Apple iTunes up to 12.9.0. It has been declared as problematic. This affects an unknown function of the component WebKit. Executing a manipulation can lead to resource consumption. The identification of this vulnerability is CVE-2018-4409. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apple iTunes up to 12.9.0 (Multimedia Player Software). This vulnerability affects some unknown processing of the component WebKit. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

A resource exhaustion issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1, tvOS 12.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

The bug was discovered 10/30/2018. The weakness was shared 10/29/2018 by Sabri Haddouche with Wire Swiss GmbH as HT209197 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2018-4409 since 01/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499. The advisory points out:

A resource exhaustion issue was addressed with improved input validation.

The vulnerability scanner Nessus provides a plugin with the ID 118571 (macOS : Apple Safari < 12.0.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371294 (Apple iTunes for Windows Prior to 12.9.1 Multiple Vulnerabilities (HT209197)).

Upgrading to version 12.9.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118571). The entries VDB-126166, VDB-126170, VDB-126180 and VDB-126181 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Multimedia Player Software

Vendor

• Apple

Name

• iTunes

Version

• 12.0
• 12.1
• 12.2
• 12.3
• 12.4
• 12.5
• 12.6
• 12.7
• 12.8
• 12.9.0

License

• free

Website

• Vendor: https://www.apple.com/

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Once again VulDB remains the best source for vulnerability data.

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