Local privilege escalation via retained intent selector
Published Jan 24, 2023 · Updated Apr 3, 2025
Privilege escalation in Android 12L and 13 allows local users to launch arbitrary activities through a crafted intent selector. SettingsActivity.getTrampolineIntent copied an incoming two-pane deep-link Intent without clearing its selector, allowing redirection to an attacker-chosen activity. Exploitation requires local low-privileged access but no user interaction, and successful use runs the chosen activity with elevated authority.
Summary
What happened
Privilege escalation in Android 12L and 13 allows local users to launch arbitrary activities through a crafted intent selector. SettingsActivity.getTrampolineIntent copied an incoming two-pane deep-link Intent without clearing its selector, allowing redirection to an attacker-chosen activity. Exploitation requires local low-privileged access but no user interaction, and successful use runs the chosen activity with elevated authority.
The record
- CVE
- CVE-2023-20904
- Published
- Jan 24, 2023
- Updated
- Apr 3, 2025
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 24, 2023CVE publishedPublication date reported by the CVE source.
- Apr 3, 2025Record 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-12L 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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