Local privacy-control bypass via TCC database path manipulation
Published Aug 24, 2021 · Updated Aug 3, 2024
Authentication bypass in Apple macOS before 12.1 or 11.6 allows local users to access protected data by bypassing Privacy preferences. The tccd service can be induced to use an attacker-planted TCC database after the user home-directory path is changed, granting applications permissions without consent prompts. Exploitation requires execution of a malicious application on the Mac and can expose files, microphone input, camera feeds, or screen contents.
Summary
What happened
Authentication bypass in Apple macOS before 12.1 or 11.6 allows local users to access protected data by bypassing Privacy preferences. The tccd service can be induced to use an attacker-planted TCC database after the user home-directory path is changed, granting applications permissions without consent prompts. Exploitation requires execution of a malicious application on the Mac and can expose files, microphone input, camera feeds, or screen contents.
The record
- CVE
- CVE-2021-30970
- Published
- Aug 24, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- macOS
- Classifications
- T1562.001
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Aug 24, 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 <11.6
- Affected versionversion=unspecified <12.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
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
- Powerdir proof-of-concept exploitproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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