Authenticated file read via path traversal
Published Nov 11, 2022 · Updated Apr 15, 2025
Path traversal in lanyulei Ferry allows remote authenticated users on an adjacent network to read process-accessible local files. TaskDetails in apis/process/task.go rejects file_name only when it is empty or begins with a dot, slash, or backslash, then joins accepted input to script.path and passes it to os.ReadFile. A low-privilege request can therefore retrieve files readable by the Ferry process; no write or service-interruption impact is established.
Summary
What happened
Path traversal in lanyulei Ferry allows remote authenticated users on an adjacent network to read process-accessible local files. TaskDetails in apis/process/task.go rejects file_name only when it is empty or begins with a dot, slash, or backslash, then joins accepted input to script.path and passes it to os.ReadFile. A low-privilege request can therefore retrieve files readable by the Ferry process; no write or service-interruption impact is established.
The record
- CVE
- CVE-2022-3940
- Published
- Nov 11, 2022
- Updated
- Apr 15, 2025
- Vendor
- lanyulei
- Product
- Ferry
- Classifications
- CWE-22, T1005
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 11, 2022CVE publishedPublication date reported by the CVE source.
- Apr 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=n/a
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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