CVE-2022-42863

What it actually does

Memory corruption due to insufficient state management allows processing of malicious web content to result in arbitrary code execution.

Why it matters to the business

Attackers can gain full control of affected devices through crafted web content, enabling data theft, malware installation, or system takeover; with over 1400 days since disclosure and rising exploit probability, unpatched systems remain exposed across Apple ecosystems despite no known ransomware use.

How an attack unfolds

An attacker crafts malicious web content exploiting a type confusion flaw in WebKit state handling; when a user visits the page in Safari or related products, the corruption is triggered leading to arbitrary code execution, as referenced in campaigns targeting Apple multiple products and iOS type confusion issues.

How to fix it

Upgrade affected products to fixed versions: Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 16.2, iPadOS 16.2, watchOS 9.2; for vim/vim (GIT) apply commit e1d720ee69755b7e74c41bbc8ba5af0a70d1fb5f.

How to confirm the fix worked

Verify installed versions match or exceed the listed fixed releases; inspect WebKit rendering paths for the addressed state management improvements and confirm no exposure to unpatched builds.

Typical attack path

1. Identify or craft malicious web content targeting the memory corruption
2. Host the content on a web server or deliver via phishing link
3. Entice user to render the content in an affected browser or app
4. Trigger state management flaw to corrupt memory
5. Execute arbitrary code for persistence or further actions

How to detect it

Review browser and system logs for crashes or unexpected code execution during web content rendering; correlate with known threat actor patterns for Apple iOS Type Confusion Vulnerability and inspect network traffic for suspicious payloads.

• WebKit process crashes with memory corruption signatures
• Unexpected code execution following web content loads
• References to Apple Multiple Products Unspecified Vulnerability in threat intel feeds

What your security team should do

• Prioritize immediate patching of all listed Apple products given publication age and EPSS increase
• Monitor for threat actor activity tied to Apple Multiple Products WebKit Type Confusion Vulnerability
• Apply the vim commit e1d720ee69755b7e74c41bbc8ba5af0a70d1fb5f where relevant
• Harden browser configurations to limit web content processing risks