Local privilege escalation via unchecked seninf bounds
Published Sep 4, 2023 · Updated Oct 21, 2024
Out-of-bounds write in MediaTek MT8797 seninf on Android 12.0 and 13.0 allows local users with System privileges to gain higher privileges. The seninf component fails to perform a bounds check before a write, allowing data outside the intended memory boundary; MediaTek has not disclosed the affected function or input. Exploitation requires existing System execution privileges but no user interaction, and successful memory corruption permits further local privilege escalation.
Summary
What happened
Out-of-bounds write in MediaTek MT8797 seninf on Android 12.0 and 13.0 allows local users with System privileges to gain higher privileges. The seninf component fails to perform a bounds check before a write, allowing data outside the intended memory boundary; MediaTek has not disclosed the affected function or input. Exploitation requires existing System execution privileges but no user interaction, and successful memory corruption permits further local privilege escalation.
The record
- CVE
- CVE-2023-20837
- Published
- Sep 4, 2023
- Updated
- Oct 21, 2024
- Vendor
- MediaTek
- Product
- MT8797
- Classifications
- CWE-787, T1404
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Sep 4, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 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 12.0
- Affected versionversion=Android 13.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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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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