Apple iOS/iPadOS up to 15.4.1 WebKit memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Apple iOS and iPadOS up to 15.4.1. Affected by this vulnerability is an unknown functionality of the component WebKit. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2022-26716. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS up to 15.4.1 (Smartphone Operating System) and classified as critical. This issue affects an unknown code of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A memory corruption issue was addressed with improved state management. This issue is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, watchOS 8.6, macOS Monterey 12.4, Safari 15.5. Processing maliciously crafted web content may lead to arbitrary code execution.

The weakness was disclosed 05/16/2022 by SorryMybad as HT213258 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2022-26716. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/10/2026). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Processing maliciously crafted web content may lead to arbitrary code execution

The vulnerability scanner Nessus provides a plugin with the ID 257860 (Linux Distros Unpatched Vulnerability : CVE-2022-26716), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 15.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A memory corruption issue was addressed with improved state management.

The vulnerability is also documented in the databases at Tenable (257860), EUVD (EUVD-2022-31266) and CERT Bund (WID-SEC-2022-2044). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• Oracle Linux
• Red Hat OpenShift
• Gentoo Linux
• RESF Rocky Linux

Productinfo

Type

• Smartphone Operating System

Vendor

• Apple

Name

• iOS
• iPadOS

Version

• 15.4.0
• 15.4.1

License

• commercial

Website

• Vendor: https://www.apple.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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