A vulnerability classified as problematic was found in Apple iOS and iPadOS up to 16.4.1 (Smartphone Operating System). This vulnerability affects an unknown code block of the component WebKit. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality.

The weakness was presented 05/18/2023 as HT213757 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2023-28204. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/20/2023). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

It is declared as highly functional. This issue was added on 05/22/2023 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/12/2023:

Apply updates per vendor instructions.

Upgrading to version 16.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds read was addressed with improved input validation.

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS
• iPadOS

Version

• 16.4.0
• 16.4.1

License

• commercial

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