Unauthorized module overwrite via insecure signature verification
Published Aug 13, 2023 · Updated Oct 10, 2024
Improper signature verification in Huawei HarmonyOS and EMUI allows remote attackers to overwrite the ServiceWifiResources module. Huawei identifies insecure module signatures but has not disclosed the exact verification error or input path that accepts a malicious replacement. Exploitation requires network reachability but no authentication or user interaction, and the documented consequence is unauthorized modification of that module.
Summary
What happened
Improper signature verification in Huawei HarmonyOS and EMUI allows remote attackers to overwrite the ServiceWifiResources module. Huawei identifies insecure module signatures but has not disclosed the exact verification error or input path that accepts a malicious replacement. Exploitation requires network reachability but no authentication or user interaction, and the documented consequence is unauthorized modification of that module.
The record
- CVE
- CVE-2023-39393
- Published
- Aug 13, 2023
- Updated
- Oct 10, 2024
- Vendor
- MindSpore
- Product
- HarmonyOS
- Classifications
- CWE-200, CWE-347, T1565
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2023CVE publishedPublication date reported by the CVE source.
- Oct 10, 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=2.0.1
- Affected versionversion=3.0.0
- Affected versionversion=3.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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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