Memory disclosure via unchecked HW_KEYMASTER input length
Published May 26, 2023 · Updated Jan 15, 2025
Out-of-bounds read in Huawei EMUI 10.1.0, 10.1.1, and 11.0.0 allows remote attackers to read memory via HW_KEYMASTER input. HW_KEYMASTER fails to check an input length before reading from a buffer, so attacker-controlled input extends the read beyond its bounds. Huawei has not disclosed the reachable interface or specific data exposed; no authentication or user interaction is required under CISA's assessment.
Summary
What happened
Out-of-bounds read in Huawei EMUI 10.1.0, 10.1.1, and 11.0.0 allows remote attackers to read memory via HW_KEYMASTER input. HW_KEYMASTER fails to check an input length before reading from a buffer, so attacker-controlled input extends the read beyond its bounds. Huawei has not disclosed the reachable interface or specific data exposed; no authentication or user interaction is required under CISA's assessment.
The record
- CVE
- CVE-2021-46887
- Published
- May 26, 2023
- Updated
- Jan 15, 2025
- Vendor
- MindSpore
- Product
- EMUI
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 26, 2023CVE publishedPublication date reported by the CVE source.
- Jan 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.1.0
- Affected versionversion=10.1.1
- Affected versionversion=11.0.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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