Out-of-bounds read via stack buffer overflow
Published Dec 7, 2021 · Updated Aug 4, 2024
Stack-based buffer overflow in Huawei HarmonyOS 2.0 allows remote attackers to trigger out-of-bounds reads via crafted network input. The affected smartphone component insufficiently verifies input, permitting a crafted value to overflow a stack buffer and read beyond its boundary. NVD rates exploitation as network-based, unauthenticated, and requiring no user interaction; the published impact is memory disclosure with no integrity change stated.
Summary
What happened
Stack-based buffer overflow in Huawei HarmonyOS 2.0 allows remote attackers to trigger out-of-bounds reads via crafted network input. The affected smartphone component insufficiently verifies input, permitting a crafted value to overflow a stack buffer and read beyond its boundary. NVD rates exploitation as network-based, unauthenticated, and requiring no user interaction; the published impact is memory disclosure with no integrity change stated.
The record
- CVE
- CVE-2021-37021
- Published
- Dec 7, 2021
- Updated
- Aug 4, 2024
- Vendor
- Huawei Technologies Co., Ltd.
- Product
- HarmonyOS
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 7, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0
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
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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