Local privilege escalation via restricted broadcast bypass
Published Aug 11, 2022 · Updated Aug 3, 2024
Android 13 has an elevation-of-privilege flaw in RestrictionsManager that lets local users send broadcasts reserved for system apps. RestrictionsManager fails to enforce the system-app restriction when handling the broadcast path, allowing a non-system application to invoke it without an additional execution privilege. Exploitation requires a local application on an enterprise-managed Android 13 device and no user interaction, with resulting access bounded by the privileges exposed through the bypass.
Summary
What happened
Android 13 has an elevation-of-privilege flaw in RestrictionsManager that lets local users send broadcasts reserved for system apps. RestrictionsManager fails to enforce the system-app restriction when handling the broadcast path, allowing a non-system application to invoke it without an additional execution privilege. Exploitation requires a local application on an enterprise-managed Android 13 device and no user interaction, with resulting access bounded by the privileges exposed through the bypass.
The record
- CVE
- CVE-2022-20268
- Published
- Aug 11, 2022
- Updated
- Aug 3, 2024
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- T1548
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2022CVE 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?
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- Affected versionversion=Android-13
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What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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Your stack
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