File disclosure via unsafe Flask send_file call
Published Jul 11, 2022 · Updated Aug 3, 2024
Absolute path traversal in Sphere through 2020-05-31 allows remote attackers to read server files through its unauthenticated Flask API. A file-serving API handler passes a request-controlled path to Flask's send_file without restricting resolution to the intended directory. Exploitation requires network access but no credentials or user interaction, and disclosure is limited to files readable by the Sphere service account.
Summary
What happened
Absolute path traversal in Sphere through 2020-05-31 allows remote attackers to read server files through its unauthenticated Flask API. A file-serving API handler passes a request-controlled path to Flask's send_file without restricting resolution to the intended directory. Exploitation requires network access but no credentials or user interaction, and disclosure is limited to files readable by the Sphere service account.
The record
- CVE
- CVE-2022-31547
- Published
- Jul 11, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-22, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 11, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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