Arbitrary host file write via path traversal
Published Jan 21, 2021 · Updated Sep 16, 2024
Path traversal in Kubernetes Secrets Store CSI Driver plugins allows remote authenticated users to write arbitrary files on cluster nodes. The Vault, Azure, and GCP providers accepted objectName, objectAlias, or fileName values containing .. and used them as output paths without confining the result to the intended mount directory. Vault Plugin before 0.0.6, Azure Plugin before 0.0.10, and GCP Plugin before 0.2.0 are affected; the attacker must be able to create a SecretProviderClass and trigger its use.
Summary
What happened
Path traversal in Kubernetes Secrets Store CSI Driver plugins allows remote authenticated users to write arbitrary files on cluster nodes. The Vault, Azure, and GCP providers accepted objectName, objectAlias, or fileName values containing .. and used them as output paths without confining the result to the intended mount directory. Vault Plugin before 0.0.6, Azure Plugin before 0.0.10, and GCP Plugin before 0.2.0 are affected; the attacker must be able to create a SecretProviderClass and trigger its use.
The record
- CVE
- CVE-2020-8567
- Published
- Jan 21, 2021
- Updated
- Sep 16, 2024
- Vendor
- Kubernetes
- Product
- Secrets Store CSI Driver
- Classifications
- CWE-22, CWE-24, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 21, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=Azure Plugin <v0.0.10
- Affected versionversion=GCP Plugin <v0.2.0
- Affected versionversion=Vault Plugin <v0.0.6
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
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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