Host data disclosure via TFTP path traversal
Published Jan 19, 2022 · Updated Sep 24, 2024
Path traversal in Oracle VM VirtualBox before 6.1.32 allows local users in guests on Windows hosts to read data through the TFTP server. The built-in NAT TFTP server fails to reject an absolute guest-supplied pathname before file operations, allowing reads outside its intended root. Exploitation requires low-privileged guest code execution, and the consequence is limited to data readable in the hypervisor context.
Summary
What happened
Path traversal in Oracle VM VirtualBox before 6.1.32 allows local users in guests on Windows hosts to read data through the TFTP server. The built-in NAT TFTP server fails to reject an absolute guest-supplied pathname before file operations, allowing reads outside its intended root. Exploitation requires low-privileged guest code execution, and the consequence is limited to data readable in the hypervisor context.
The record
- CVE
- CVE-2022-21394
- Published
- Jan 19, 2022
- Updated
- Sep 24, 2024
- Vendor
- Oracle Corporation
- Product
- Oracle VM VirtualBox
- Classifications
- T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2022CVE publishedPublication date reported by the CVE source.
- Sep 24, 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=unspecified <6.1.32
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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