A vulnerability was found in Apple watchOS up to 7.3.3 (Smartwatch Operating System) and classified as problematic. Affected by this issue is some unknown functionality of the component Preferences. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/26/2021 by Zhipeng Huo and Yuebin Sun as HT212324 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2021-1815. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006. The advisory points out:

A local user may be able to modify protected parts of the file system

Upgrading to version 7.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A parsing issue in the handling of directory paths was addressed with improved path validation.

Productinfo

Type

• Smartwatch Operating System

Vendor

• Apple

Name

• watchOS

Version

• 7.3.0
• 7.3.1
• 7.3.2
• 7.3.3

License

• commercial

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CPE 2.2info

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