A vulnerability, which was classified as problematic, was found in Apple watchOS (Smartwatch Operating System). Affected is an unknown part of the component CoreCrypto. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

A denial of service issue was addressed with improved input validation.

The weakness was disclosed 10/29/2019 by Nicky Mouha with NIST as HT210607 as confirmed security advisory (Website). The advisory is available at support.apple.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2019-8741 since 02/18/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project. The advisory points out:

Processing a large input may lead to a denial of service

Upgrading to version 13.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The security advisory contains the following remark:

A denial of service issue was addressed with improved input validation.

The entries 142357, 150737, 150761 and 150763 are pretty similar.

Productinfo

Type

• Smartwatch Operating System

Vendor

• Apple

Name

• watchOS

License

• commercial

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