Privileged code execution via unchecked trustlet input
Published Oct 6, 2021 · Updated Aug 3, 2024
Stack-based buffer overflow in Samsung Mobile Devices before SMR Oct-2021 Release 1 allows local users to execute arbitrary code. The Widevine trustlet accepts attacker-controlled input without the boundary checks needed to keep writes within a stack buffer. Exploitation requires high privileges on a selected Android 10 or 11 device with an Exynos chipset and permits code execution in the trustlet context.
Summary
What happened
Stack-based buffer overflow in Samsung Mobile Devices before SMR Oct-2021 Release 1 allows local users to execute arbitrary code. The Widevine trustlet accepts attacker-controlled input without the boundary checks needed to keep writes within a stack buffer. Exploitation requires high privileges on a selected Android 10 or 11 device with an Exynos chipset and permits code execution in the trustlet context.
The record
- CVE
- CVE-2021-25469
- Published
- Oct 6, 2021
- Updated
- Aug 3, 2024
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-787, CWE-120, T1658
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Oct 6, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Select Q(10.0), R(11.0) devices with Exynos chipsets <SMR Oct-2021 Release 1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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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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