CVE-2022-42856 on CISA KEV

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a rep

01What CISA says about this vulnerability

A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• support.apple.com — https://support.apple.com/en-us/HT213535
• support.apple.com — https://support.apple.com/en-us/HT213532
• support.apple.com — https://support.apple.com/en-us/HT213531
• support.apple.com — https://support.apple.com/en-us/HT213516
• support.apple.com — https://support.apple.com/en-us/HT213537
• seclists.org — http://seclists.org/fulldisclosure/2022/Dec/21
• seclists.org — http://seclists.org/fulldisclosure/2022/Dec/23
• seclists.org — http://seclists.org/fulldisclosure/2022/Dec/22
• seclists.org — http://seclists.org/fulldisclosure/2022/Dec/26
• seclists.org — http://seclists.org/fulldisclosure/2022/Dec/28
• www.openwall.com — http://www.openwall.com/lists/oss-security/2022/12/26/1
• security.gentoo.org — https://security.gentoo.org/glsa/202305-32

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Apple	tvOS	unspecified
Apple	tvOS	unspecified
Apple	tvOS	unspecified
Apple	tvOS	unspecified
Apple	tvOS	unspecified

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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