Arbitrary file write via unchecked extraction paths
Published Jan 31, 2023 · Updated Mar 27, 2025
Path traversal in sviehb Jefferson before 0.4.1 allows local users to write outside the extraction directory via a crafted JFFS2 image. The dump_fs routine joins untrusted directory-entry names into output paths without verifying that the resolved destination remains beneath the chosen extraction root. Exploitation requires a user or automated analysis pipeline to extract the malicious image, after which attacker-controlled content can overwrite files writable by the Jefferson process.
Summary
What happened
Path traversal in sviehb Jefferson before 0.4.1 allows local users to write outside the extraction directory via a crafted JFFS2 image. The dump_fs routine joins untrusted directory-entry names into output paths without verifying that the resolved destination remains beneath the chosen extraction root. Exploitation requires a user or automated analysis pipeline to extract the malicious image, after which attacker-controlled content can overwrite files writable by the Jefferson process.
The record
- CVE
- CVE-2023-0592
- Published
- Jan 31, 2023
- Updated
- Mar 27, 2025
- Vendor
- sviehb
- Product
- Jefferson
- Classifications
- CWE-22, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 31, 2023CVE publishedPublication date reported by the CVE source.
- Mar 27, 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=0 <0.4.1
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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