A vulnerability classified as problematic has been found in Apple iOS up to 12.0.1 (Smartphone Operating System). Affected is an unknown code block of the component Safari Reader. The manipulation with an unknown input leads to a cross site scripting vulnerability (Universal). CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

A logic issue was addressed with improved validation. This issue affected versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

The bug was discovered 10/30/2018. The weakness was published 10/29/2018 as HT209192 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2018-4374 since 01/02/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/08/2020). It is expected to see the exploit prices for this product increasing in the near future.The MITRE ATT&CK project declares the attack technique as T1059.007. The advisory points out:

A logic issue was addressed with improved 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 12.1 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). Similar entries are available at 126195, 126164, 126165 and 126166.

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS

Version

• 12.0.0
• 12.0.1

License

• commercial

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