Local privilege escalation via unchecked imgsys write
Published Aug 7, 2023 · Updated Oct 22, 2024
An out-of-bounds write in MediaTek imgsys on Android 12.0, Android 13.0, and Yocto 4.0 allows local users to escalate privileges. The imgsys component writes beyond an intended buffer because it fails to check a boundary before performing the write. Exploitation requires existing System execution privileges on an affected MediaTek chipset but no user interaction; the exact function and input path are undisclosed.
Summary
What happened
An out-of-bounds write in MediaTek imgsys on Android 12.0, Android 13.0, and Yocto 4.0 allows local users to escalate privileges. The imgsys component writes beyond an intended buffer because it fails to check a boundary before performing the write. Exploitation requires existing System execution privileges on an affected MediaTek chipset but no user interaction; the exact function and input path are undisclosed.
The record
- CVE
- CVE-2023-20804
- Published
- Aug 7, 2023
- Updated
- Oct 22, 2024
- Vendor
- Yocto Project
- Product
- Yocto Project
- Classifications
- CWE-787, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Aug 7, 2023CVE publishedPublication date reported by the CVE source.
- Oct 22, 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=4.0
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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