User impersonation via predictable access keys
Published Jan 3, 2024 · Updated Jun 17, 2025
Authentication weakness in CubeFS before 3.3.1 allows remote attackers to impersonate users and obtain higher privileges. The util/string.go RandomString function reseeds math/rand with the current nanosecond before generating each accessKey character, making authentication keys predictable. No existing account is required under the CNA assessment, but exploitation requires predicting or guessing a generated user's accessKey and grants that user's assigned privileges.
Summary
What happened
Authentication weakness in CubeFS before 3.3.1 allows remote attackers to impersonate users and obtain higher privileges. The util/string.go RandomString function reseeds math/rand with the current nanosecond before generating each accessKey character, making authentication keys predictable. No existing account is required under the CNA assessment, but exploitation requires predicting or guessing a generated user's accessKey and grants that user's assigned privileges.
The record
- CVE
- CVE-2023-46740
- Published
- Jan 3, 2024
- Updated
- Jun 17, 2025
- Vendor
- CubeFS
- Product
- CubeFS
- Classifications
- CWE-330, T1078
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 3, 2024CVE publishedPublication date reported by the CVE source.
- Jun 17, 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=< 3.3.1
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
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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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