Apple iCloud up to 7.8.1 on Windows Safari input validation

Summaryinfo

A vulnerability was found in Apple iCloud up to 7.8.1 on Windows and classified as critical. The affected element is an unknown function of the component Safari. Such manipulation leads to input validation. This vulnerability is listed as CVE-2018-4439. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iCloud up to 7.8.1 on Windows (Cloud Software). It has been rated as critical. Affected by this issue is an unknown code of the component Safari. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A logic issue was addressed with improved validation. This issue affected versions prior to iOS 12.1.1, Safari 12.0.2, iTunes 12.9.2 for Windows, iCloud for Windows 7.9.

The bug was discovered 12/05/2018. The weakness was presented 12/05/2018 by xisigr with Tencent as HT209346 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2018-4439 since 01/02/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

A logic issue was addressed with improved validation.

The vulnerability scanner Nessus provides a plugin with the ID 119498 (macOS : Apple Safari < 12.0.2 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 371368 (Apple iTunes for Windows Prior to 12.9.2 Multiple Vulnerabilities (HT209345)).

Upgrading to version 7.9 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 (119498). See VDB-127582, VDB-127574, VDB-127575 and VDB-127576 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Cloud Software

Vendor

• Apple

Name

• iCloud

Version

• 7.8.0
• 7.8.1

License

• free

Website

• Vendor: https://www.apple.com/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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