Arbitrary file access via tampered notifications
Published Jan 3, 2022 · Updated Aug 4, 2024
Improper privilege management in Huawei HarmonyOS 2.0 Phone Manager allows remote attackers to read and write arbitrary files. Phone Manager processes tampered notification data with privileges that permit attacker-selected file access, but Huawei has not disclosed the responsible function or missing check. No authentication or user interaction is required; exploitation compromises file confidentiality and integrity without a reported availability impact.
Summary
What happened
Improper privilege management in Huawei HarmonyOS 2.0 Phone Manager allows remote attackers to read and write arbitrary files. Phone Manager processes tampered notification data with privileges that permit attacker-selected file access, but Huawei has not disclosed the responsible function or missing check. No authentication or user interaction is required; exploitation compromises file confidentiality and integrity without a reported availability impact.
The record
- CVE
- CVE-2021-39982
- Published
- Jan 3, 2022
- Updated
- Aug 4, 2024
- Vendor
- Huawei Technologies Co., Ltd.
- Product
- HarmonyOS
- Classifications
- CWE-269
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 3, 2022CVE 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=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
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Technologies
Your stack
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Your stack
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