Apple Safari up to 12.0.1 input validation

Summaryinfo

A vulnerability identified as critical has been detected in Apple Safari up to 12.0.1. This affects an unknown function of the component Safari. The manipulation leads to input validation. This vulnerability is traded as CVE-2018-4439. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Safari up to 12.0.1 (Web Browser). It has been rated as critical. This issue affects some unknown functionality 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. The summary by CVE is:

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 shared 12/05/2018 by xisigr with Tencent as HT209344 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2018-4439 since 01/02/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not 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 12.0.2 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). The entries VDB-127582, VDB-127574, VDB-127575 and VDB-127576 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Apple

Name

• Safari

Version

• 12.0.0
• 12.0.1

License

• commercial

Website

• Vendor: https://www.apple.com/

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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