Kernel memory mitigation bypass via undisclosed validation flaw
Published Sep 8, 2021 · Updated Aug 3, 2024
Kernel validation flaw in iOS before 14.7, tvOS before 14.7, and watchOS before 7.6 lets attackers bypass kernel memory mitigations. Apple identifies the locus as the kernel but has not disclosed which validation operation mishandles state or input. Exploitation requires existing kernel code execution and weakens memory protections rather than independently granting initial access or kernel execution.
Summary
What happened
Kernel validation flaw in iOS before 14.7, tvOS before 14.7, and watchOS before 7.6 lets attackers bypass kernel memory mitigations. Apple identifies the locus as the kernel but has not disclosed which validation operation mishandles state or input. Exploitation requires existing kernel code execution and weakens memory protections rather than independently granting initial access or kernel execution.
The record
- CVE
- CVE-2021-30770
- Published
- Sep 8, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- iOS
- Classifications
- CWE-287
- Attack vector
- local
- Privileges
- admin
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.
Weakness, pattern, technique
Public exploit references
- Fugu14 untethered 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
See the directory against your own environment.
Your stack
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