Local data disclosure via snoop-assisted L1D sampling
Published Mar 12, 2020 · Updated Aug 4, 2024
Information disclosure in some Intel Processors allows local users to infer L1D cache data through snoop-assisted sampling. A faulting, assisting, or aborting load samples a modified cache line when a cache-coherence snoop hits it within the same single-core clock cycle. Exploitation requires authenticated local code and complex timing conditions; successful sampling exposes data from modified L1D cache lines without altering system state.
Summary
What happened
Information disclosure in some Intel Processors allows local users to infer L1D cache data through snoop-assisted sampling. A faulting, assisting, or aborting load samples a modified cache line when a cache-coherence snoop hits it within the same single-core clock cycle. Exploitation requires authenticated local code and complex timing conditions; successful sampling exposes data from modified L1D cache lines without altering system state.
The record
- CVE
- CVE-2020-0550
- Published
- Mar 12, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 12, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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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Technologies
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