CVE-2022-42856: Apple iOS Type Confusion Vulnerability

Published Nov 30, 2022
·
Updated

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..

Other sources

Accessibility. A logic issue was addressed with improved restrictions.

— Apple

Accounts. This issue was addressed with improved data protection.

— Apple

AMD. A memory corruption issue was addressed with improved input validation.

— Apple

AMD. An out-of-bounds write issue was addressed with improved input validation.

— Apple

Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.

— CISA

Credit

Mickey Jin@@patch1t, Tommy Muir@@Muirey03, John Aakerblom@@jaakerblom, Antonio Zekic@@antoniozekic, Weijia Dai@@dwj1210(Momo Security), Ian Beer(Google Project Zero), Felix Poulin-Belanger, pattern-f@@pattern_F_(Ant Security Light), Adam Doupé(ASU SEFCOM), Apple, Adam M., CVE-2022-46716, Mickey Jin@@patch1t(Offensive Security), Csaba Fitzl@@theevilbit(Offensive Security), Jiwon Park, Mieszko Wawrzyniak, an anonymous researcher, Ivan Fratric(Google Project Zero), CVE-2022-24836, CVE-2022-29181, KirtiKumar Anandrao Ramchandani, Michael (Biscuit) Thomas, Wojciech Reguła@@_r3ggi(SecuRing), @@real_as3617, Hyeon Park@@tree_segment(Team ApplePIE), Maddie Stone(Google Project Zero), ChengGang Wu(Institute of Computing Technology), Yan Kang(Institute of Computing Technology), YuHao Hu(Institute of Computing Technology), Yue Sun(Institute of Computing Technology), Jiming Wang(Institute of Computing Technology), (Institute of Computing Technology), JiKai Ren(Institute of Computing Technology), Hang Shu(Institute of Computing Technology), Chinese Academy(Sciences), KirtiKumar Anandrao Ramchandani (kirtikumarar.com), hazbinhotel(Trend Micro Zero Day Initiative), Samuel Groß(Google V8 Security), Dohyun Lee@@l33d0hyun(DNSLab at Korea University), Ryan Shin(IAAI SecLab at Korea University), Clément Lecigne(Google's Threat Analysis Group), Thijs Alkemade@@xnyhps(Computest Sector 7), CVE-2022-35252, Linus Henze(Pinauten GmbH), Yonghwi Jin@@jinmo123(Theori), John Balestrieri(Tinrocket), Mickey Jin@@patch1t(Trend Micro), Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), ABC Research s.r.o., ABC Research s.r.o, Ned Williamson(Google Project Zero), Nathan Wachholz(Google Project Zero), Dohyun Lee@@l33d0hyun(SSD Secure Disclosure Labs), Korea Univ., Andrey Labunets, Nikita Tarakanov, Xia0o0o0o(W4terDr0p), Sun Yat-sen University, Willy R. Vasquez(The University of Texas at Austin), Zitong Wu(吴梓桐)(Zhuhai No)

Affected Software

15 affected componentsFixes available
tvOS<16.2
16.2
macOS Ventura<13.1
13.1
Safari<16.2
16.2
Apple iOS and iPadOS<16.1.2
16.1.2
Apple iOS and iPadOS
Apple iOS and iPadOS<16.2
16.2
Apple iOS, iPadOS, and macOS<16.2
16.2
Apple iOS and iPadOS<15.7.2
15.7.2
Apple iOS, iPadOS, and macOS<15.7.2
15.7.2
Safari<16.2
Apple iOS, iPadOS, and macOS<15.7.2
iPhone OS<15.7.2
iPhone OS>=16.0<16.1.2
macOS<13.1
tvOS<16.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 16.2
  2. Upgrade

    Upgrade macOS Ventura to a version that resolves this vulnerability.

    Fixed in 13.1
  3. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 16.2
  4. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 16.1.2
  5. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 16.2
  6. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 16.2
  7. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 15.7.2
  8. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 15.7.2
  9. Upgrade

    Upgrade curl to a version that resolves this vulnerability.

    Fixed in 7.85.0
  10. Configuration

    Enable the hardened runtime for AppleMobileFileIntegrity (the issue was addressed by enabling hardened runtime).

    AppleMobileFileIntegrity hardened runtime = enabled

Event History

Dec 14, 2022
CVE Published
via CISA·12:00 AM
Known Exploited
via CISA·12:00 AM
Dec 15, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
via Red Hat·08:06 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2022-42856?

CVE-2022-42856 is a type confusion vulnerability in Apple iOS that allows for code execution when processing malicious web content.

2

Which software products are affected by CVE-2022-42856?

CVE-2022-42856 affects Apple iOS, Apple iPadOS, Apple macOS Ventura, Apple tvOS, and Apple Safari.

3

What versions of Apple iOS are affected by CVE-2022-42856?

CVE-2022-42856 affects Apple iOS versions up to and excluding 16.2, 16.1.2, and 15.7.2.

4

How can I fix CVE-2022-42856?

To fix CVE-2022-42856, update your Apple iOS to version 16.2 or newer.

5

Where can I find more information about CVE-2022-42856?

You can find more information about CVE-2022-42856 on Apple's support page: [insert link]

Company

Resources

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