Local information disclosure via integer-overflowed driver read
Published Mar 10, 2021 · Updated Aug 3, 2024
Information disclosure in Android's FingerTipS kernel driver allows local users with System privileges to read sensitive memory. The fts_driver_test_write function fails to validate user-supplied data, allowing an integer overflow before an out-of-bounds memory read. Exploitation requires local System-level code execution and no user interaction; the disclosed data can support a separate kernel-privilege exploit chain.
Summary
What happened
Information disclosure in Android's FingerTipS kernel driver allows local users with System privileges to read sensitive memory. The fts_driver_test_write function fails to validate user-supplied data, allowing an integer overflow before an out-of-bounds memory read. Exploitation requires local System-level code execution and no user interaction; the disclosed data can support a separate kernel-privilege exploit chain.
The record
- CVE
- CVE-2021-0458
- Published
- Mar 10, 2021
- Updated
- Aug 3, 2024
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- T1068
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Mar 10, 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?
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- Affected versionversion=Android kernel
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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