Local privilege escalation via unchecked imgsys range
Published Sep 4, 2023 · Updated Oct 21, 2024
Out-of-bounds access in MediaTek MT8395 imgsys allows local users to escalate privileges by supplying out-of-range input. The imgsys component fails to validate an input range before reading and writing memory outside the intended bounds. Exploitation requires System execution privileges and user interaction; public details do not identify the input path or resulting privilege boundary.
Summary
What happened
Out-of-bounds access in MediaTek MT8395 imgsys allows local users to escalate privileges by supplying out-of-range input. The imgsys component fails to validate an input range before reading and writing memory outside the intended bounds. Exploitation requires System execution privileges and user interaction; public details do not identify the input path or resulting privilege boundary.
The record
- CVE
- CVE-2023-20840
- Published
- Sep 4, 2023
- Updated
- Oct 21, 2024
- Vendor
- MediaTek
- Product
- MT8395
- Classifications
- CWE-787, CWE-125, T1068
- 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Android 11.0
- Affected versionversion=Android 12.0
- Affected versionversion=IOT-v23.0
- Affected versionversion=Linux 6.1
- Affected versionversion=Yocto 4.0
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.
Weakness, pattern, technique
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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