Local privilege escalation via stale death callback
Published Jun 11, 2021 · Updated Aug 3, 2024
Use-after-free in the Android 11 Media Framework allows local users to gain additional privileges through a Binder death-notification race. BinderDiedCallback treats its cookie as a live ResourceManagerServiceProxy and calls binderDied after teardown has destroyed that object. Exploitation requires a local malicious application, needs no user interaction or elevated execution rights, and can escape application-level privilege restrictions.
Summary
What happened
Use-after-free in the Android 11 Media Framework allows local users to gain additional privileges through a Binder death-notification race. BinderDiedCallback treats its cookie as a live ResourceManagerServiceProxy and calls binderDied after teardown has destroyed that object. Exploitation requires a local malicious application, needs no user interaction or elevated execution rights, and can escape application-level privilege restrictions.
The record
- CVE
- CVE-2021-0482
- Published
- Jun 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 11, 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?
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- Affected versionversion=Android-11
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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