CVE-2022-42867

What it actually does

Use-after-free condition in memory management allows malicious web content to corrupt memory and achieve arbitrary code execution.

Why it matters to the business

Successful exploitation grants attackers full control over user devices, enabling data theft, ransomware deployment, or persistence; the vulnerability affects widely deployed Apple platforms with high ecosystem prevalence.

How an attack unfolds

An attacker hosts or delivers maliciously crafted web content that triggers the use-after-free during rendering; when the victim processes the content in a vulnerable browser or app, the flaw is exploited to execute attacker-controlled code, consistent with observed activity from named Apple product threat actors.

How to fix it

Upgrade affected products to the 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) instances, apply commit e1d720ee69755b7e74c41bbc8ba5af0a70d1fb5f.

How to confirm the fix worked

Verify installed versions match or exceed the listed fixed releases; test rendering of known proof-of-concept web content in isolated environments to confirm absence of the crash or code-execution behavior.

Typical attack path

1. Craft and host malicious web content targeting the vulnerable memory path
2. Deliver content via phishing, compromised sites, or drive-by downloads
3. Victim browser or app processes the content triggering the use-after-free
4. Exploit primitive used to achieve arbitrary code execution and post-exploitation

How to detect it

Review browser process crash logs and WebKit memory violation reports for patterns matching the use-after-free; correlate with threat actor indicators associated with Apple Multiple Products Unspecified Vulnerability campaigns; inspect network logs for delivery of suspicious web content.

What your security team should do

• Prioritize patching of all listed Apple products before the CISA-style remediation windows if KEV status changes
• Block or sandbox untrusted web content for high-risk users until upgrades are complete
• Update vulnerability scanners and asset inventories to flag pre-fix versions of Safari, iOS, macOS, tvOS, watchOS, and vim