TEE kernel crash via unchecked cipher length
Published Sep 16, 2022 · Updated Aug 3, 2024
Buffer-length validation failure in Samsung mTower 0.3.0 and earlier allows attackers controlling a trusted application to crash the TEE kernel. TEE_CipherUpdate accepts caller-supplied srcLen without confirming that it matches the srcData buffer, then processes the unchecked length. Control of a trusted application is required; the consequence is interruption of the trusted execution environment, with no reported data access or modification.
Summary
What happened
Buffer-length validation failure in Samsung mTower 0.3.0 and earlier allows attackers controlling a trusted application to crash the TEE kernel. TEE_CipherUpdate accepts caller-supplied srcLen without confirming that it matches the srcData buffer, then processes the unchecked length. Control of a trusted application is required; the consequence is interruption of the trusted execution environment, with no reported data access or modification.
The record
- CVE
- CVE-2022-40758
- Published
- Sep 16, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-119, T1499.004
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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Attacks
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