Authenticated information disclosure via volume-client error events
Published Jun 4, 2020 · Updated Sep 16, 2024
SSRF in affected Kubernetes kube-controller-manager releases allows remote authenticated users to read up to 500 bytes from internal endpoints. The GlusterFS, Quobyte, StorageOS, and ScaleIO volume clients request a user-supplied URL and propagate returned content through detailed errors into cluster events. Exploitation requires permission to create a pod with an affected volume type or create a StorageClass, plus an unprotected endpoint reachable from the control-plane host network.
Summary
What happened
SSRF in affected Kubernetes kube-controller-manager releases allows remote authenticated users to read up to 500 bytes from internal endpoints. The GlusterFS, Quobyte, StorageOS, and ScaleIO volume clients request a user-supplied URL and propagate returned content through detailed errors into cluster events. Exploitation requires permission to create a pod with an affected volume type or create a StorageClass, plus an unprotected endpoint reachable from the control-plane host network.
The record
- CVE
- CVE-2020-8555
- Published
- Jun 4, 2020
- Updated
- Sep 16, 2024
- Vendor
- Kubernetes
- Product
- Kubernetes
- Classifications
- CWE-918, T1552.005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 4, 2020CVE 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=1.1
- Affected versionversion=1.10
- Affected versionversion=1.11
- Affected versionversion=1.12
- Affected versionversion=1.13
- Affected versionversion=1.14
- Affected versionversion=1.15 <1.15.12
- Affected versionversion=1.16 <1.16.9
- Affected versionversion=1.17 <1.17.5
- Affected versionversion=1.18.0
- Affected versionversion=1.2
- Affected versionversion=1.3
- Affected versionversion=1.4
- Affected versionversion=1.5
- Affected versionversion=1.6
- Affected versionversion=1.7
- Affected versionversion=1.8
- Affected versionversion=1.9
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
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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