Local information disclosure via data-dependent cache timing
Published Jun 9, 2021 · Updated Aug 4, 2024
Observable timing discrepancy in some Intel Processors allows local users with authenticated access to infer information through cache timing. Intel identifies the issue as Influence of Trivial Data Value in Cache Policy but has not published which processor operation makes cache behavior depend on the data value. Exploitation requires local low-privileged code and high-complexity timing measurements; the reported consequence is limited information disclosure.
Summary
What happened
Observable timing discrepancy in some Intel Processors allows local users with authenticated access to infer information through cache timing. Intel identifies the issue as Influence of Trivial Data Value in Cache Policy but has not published which processor operation makes cache behavior depend on the data value. Exploitation requires local low-privileged code and high-complexity timing measurements; the reported consequence is limited information disclosure.
The record
- CVE
- CVE-2020-24512
- Published
- Jun 9, 2021
- Updated
- Aug 4, 2024
- Vendor
- Topcon Positioning Systems, Inc.
- Product
- Intel Processors
- Classifications
- CWE-203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
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- Affected versionversion=See references
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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