Apple iOS up to 12.1 LinkPresentation Email input validation

Summaryinfo

A vulnerability was found in Apple iOS up to 12.1 and classified as critical. Impacted is an unknown function of the component LinkPresentation. The manipulation as part of Email results in input validation. This vulnerability is reported as CVE-2018-4429. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 12.1 (Smartphone Operating System). It has been classified as critical. Affected is an unknown code of the component LinkPresentation. The manipulation as part of a Email leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1.1, watchOS 5.1.2.

The bug was discovered 12/05/2018. The weakness was disclosed 12/05/2018 by Victor Le Pochat as HT209340 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2018-4429 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 04/18/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.

Upgrading to version 12.1.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries VDB-127582, VDB-127563, VDB-127564 and VDB-127565 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS

Version

• 12.0
• 12.1

License

• commercial

Website

• Vendor: https://www.apple.com/

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Once again VulDB remains the best source for vulnerability data.

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