Arbitrary file overwrite via in-stream marks path
Published Jan 24, 2020 · Updated Aug 4, 2024
Path traversal in Microsoft Git before 2.24.1 allows local users to overwrite arbitrary files through a fast-import stream. The fast-import parser accepts an export-marks path from an untrusted in-stream feature command, then opens and truncates that path when writing the marks table. Exploitation requires an attacker-controlled fast-import stream, such as one consumed by a remote helper, and filesystem permissions limit which files can be replaced.
Summary
What happened
Path traversal in Microsoft Git before 2.24.1 allows local users to overwrite arbitrary files through a fast-import stream. The fast-import parser accepts an export-marks path from an untrusted in-stream feature command, then opens and truncates that path when writing the marks table. Exploitation requires an attacker-controlled fast-import stream, such as one consumed by a remote helper, and filesystem permissions limit which files can be replaced.
The record
- CVE
- CVE-2019-1348
- Published
- Jan 24, 2020
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Microsoft Git
- Classifications
- T1565.001
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Jan 24, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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=Before 2.24.1, 2.23.1, 2.22.2, 2.21.1, 2.20.2, 2.19.3, 2.18.2, 2.17.3, 2.16.6, 2.15.4, 2.14.6
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
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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