Known exploited vulnerability
CVE-2022-42856
The short answer
CVE-2022-42856 affects Apple tvOS and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-12-14: attackers are using it, so patch it first.
What it is
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..
Weakness: CWE-843.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Dec 14, 2022
Federal due date Jan 4, 2023
EPSS, next 30 days
8.5%
Higher than 95% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
tvOS. NVD's record lists the exact affected versions.
References
- security.gentoo.org/glsa/202305-32 Third Party Advisory
- support.apple.com/en-us/HT213516 Release NotesVendor Advisory
- support.apple.com/en-us/HT213531 Release NotesVendor Advisory
- support.apple.com/en-us/HT213532 Release NotesVendor Advisory
- support.apple.com/en-us/HT213535 Release NotesVendor Advisory
- support.apple.com/en-us/HT213537 Release NotesVendor Advisory
- security.gentoo.org/glsa/202305-32 Third Party Advisory
- support.apple.com/en-us/HT213516 Release NotesVendor Advisory
- support.apple.com/en-us/HT213531 Release NotesVendor Advisory
- support.apple.com/en-us/HT213532 Release NotesVendor Advisory
- support.apple.com/en-us/HT213535 Release NotesVendor Advisory
- support.apple.com/en-us/HT213537 Release NotesVendor Advisory
Questions
Is CVE-2022-42856 being exploited?
Yes. CISA added CVE-2022-42856 to its Known Exploited Vulnerabilities catalog on 2022-12-14, with a federal remediation due date of 2023-01-04.
How do I fix CVE-2022-42856?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
Related
Latest CVEs this week
Critical and High CVEs from the last 7 days, with KEV and EPSS.
Exploited vulnerabilities by vendor
Every vendor in CISA's KEV catalog, with its count.
Apple exploited vulnerabilities
Everything CISA lists as exploited for Apple.
Vulnerability watch
A briefing and a fix pull request when an advisory hits your dependencies.
Know the day a CVE lands in your code
Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.