Pointer Authentication bypass via flawed state management
Published Sep 8, 2021 · Updated Aug 3, 2024
Pointer Authentication bypass in Apple iOS and tvOS before 14.7 and watchOS before 7.6 allows attackers to subvert pointer checks. The Kernel's Pointer Authentication state-management logic mishandles internal state, but Apple has not published the specific erroneous transition. Exploitation requires prior arbitrary read-and-write capability and user interaction, and the published impact is limited to bypassing control-flow pointer integrity.
Summary
What happened
Pointer Authentication bypass in Apple iOS and tvOS before 14.7 and watchOS before 7.6 allows attackers to subvert pointer checks. The Kernel's Pointer Authentication state-management logic mishandles internal state, but Apple has not published the specific erroneous transition. Exploitation requires prior arbitrary read-and-write capability and user interaction, and the published impact is limited to bypassing control-flow pointer integrity.
The record
- CVE
- CVE-2021-30769
- Published
- Sep 8, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- iOS
- Classifications
- CWE-287, T1211
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <14.7
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Fugu14 untethered iOS jailbreakfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- Fugu14 jailbreak exploit chainexploit chain
Technologies
Your stack
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Your stack
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