Local enclave-data disclosure via unchecked pointer alignment
Published Dec 30, 2023 · Updated Aug 2, 2024
Information disclosure in Fortanix EnclaveOS CCM before 3.32 allows local users to read protected enclave data through SGX entry paths. The enclave_ecall function and system-call layer fail to reject non-aligned untrusted pointers, leaving 33 stale-data buffer-read paths. Exploitation requires low-privileged local access on an Intel SGX host and affects confidentiality without reported integrity or availability impact.
Summary
What happened
Information disclosure in Fortanix EnclaveOS CCM before 3.32 allows local users to read protected enclave data through SGX entry paths. The enclave_ecall function and system-call layer fail to reject non-aligned untrusted pointers, leaving 33 stale-data buffer-read paths. Exploitation requires low-privileged local access on an Intel SGX host and affects confidentiality without reported integrity or availability impact.
The record
- CVE
- CVE-2023-38021
- Published
- Dec 30, 2023
- Updated
- Aug 2, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 30, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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