Apple Safari up to 11.0 Javascript Core array index

Summaryinfo

A vulnerability, which was classified as critical, has been found in Apple Safari up to 11.0. Impacted is an unknown function of the component Javascript Core. Performing a manipulation results in array index. This vulnerability was named CVE-2018-4210. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple Safari up to 11.0 (Web Browser). This affects an unknown functionality of the component Javascript Core. The manipulation with an unknown input leads to a array index vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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 presented 12/02/2018 (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2018-4210 since 01/02/2018. It is possible to initiate the attack remotely. No form of authentication is needed for 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/26/2023).

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 $5k-$25k. 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 11.1 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 (119323). See VDB-129059, VDB-129108, VDB-129109 and VDB-129110 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Apple

Name

• Safari

Version

• 11.0

License

• commercial

Website

• Vendor: https://www.apple.com/

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

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