Arbitrary file overwrite via unchecked parent paths
Published Dec 27, 2022 · Updated Apr 11, 2025
Path traversal in tar-utils before 0.0.0-20201201191210-20a61371de5b allows attackers to write files outside the extraction directory. Extractor.outputPath splits an archive member path, removes its first element, and rebases the remainder without rejecting embedded .. elements. A consuming application must pass an attacker-controlled archive to Extractor.Extract; successful exploitation overwrites files writable by that process.
Summary
What happened
Path traversal in tar-utils before 0.0.0-20201201191210-20a61371de5b allows attackers to write files outside the extraction directory. Extractor.outputPath splits an archive member path, removes its first element, and rebases the remainder without rejecting embedded .. elements. A consuming application must pass an attacker-controlled archive to Extractor.Extract; successful exploitation overwrites files writable by that process.
The record
- CVE
- CVE-2020-36566
- Published
- Dec 27, 2022
- Updated
- Apr 11, 2025
- Vendor
- Jeromy Johnson
- Product
- tar-utils
- Classifications
- CWE-22
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 27, 2022CVE publishedPublication date reported by the CVE source.
- Apr 11, 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?
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- Affected versionversion=0 <0.0.0-20201201191210-20a61371de5b
What conditions does exploitation require?
What is affected?
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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Your stack
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