CVE-2022-42856

HIGH severity · CVSS 8.8 · CWE-843 · actively exploited (CISA KEV)

8.8CVSS HIGH ● exploited

🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities). Added to KEV 2022-12-14. US federal agencies must patch by 2023-01-04.

Summary

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..

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products we track (1)

Apple Safari

Recommendation

This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.

Additional information

NVD record
https://support.apple.com/en-us/HT213516Advisory
http://seclists.org/fulldisclosure/2022/Dec/21Advisory
http://seclists.org/fulldisclosure/2022/Dec/22Advisory
http://seclists.org/fulldisclosure/2022/Dec/23Advisory
http://seclists.org/fulldisclosure/2022/Dec/26Advisory
http://seclists.org/fulldisclosure/2022/Dec/28Advisory
http://www.openwall.com/lists/oss-security/2022/12/26/1Advisory
https://security.gentoo.org/glsa/202305-32Advisory