A vulnerability, which was classified as critical, has been found in Apple iOS up to 11.2 (Smartphone Operating System). Affected by this issue is an unknown part of the component Javascript Core. The manipulation with an unknown input leads to a array index vulnerability. Using CWE to declare the problem leads to CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In iOS before 11.3, Safari before 11.1, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, an array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks.

The bug was discovered 03/29/2018. The weakness was disclosed 12/02/2018 (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2018-4210 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. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/26/2023). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 248 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 119323 (GLSA-201812-04 : WebkitGTK+: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197266 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3781-1)).

Upgrading to version 11.3 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 (119323).

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS

Version

• 11.0
• 11.1
• 11.2

License

• commercial

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