Link following in Kubernetes
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 5 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using subpath volume mounts with any volume type (including non-privileged pods, subject to file permissions) can access files/directories outside of the volume, including the host's filesystem.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Kubernetes | Kubernetes | v1.3.x; v1.4.x; v1.5.x; v1.6.x; before v1.7.14; before v1.8.9; before v1.9.4 | v1.7.14, v1.8.9, v1.9.4 | Patch available | CNA |
- Kubernetes VendorKubernetes Affected v1.3.x; v1.4.x; v1.5.x; v1.6.x; before v1.7.14; before v1.8.9; before v1.9.4 Fixed in v1.7.14, v1.8.9, v1.9.4 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* | 1.3.0 – 1.3.10; 1.4.0 – 1.4.12; 1.5.0 – 1.5.8; 1.6.0 – 1.6.13; 1.7.0 to before 1.7.14; 1.8.0 to before 1.8.9; 1.9.0 to before 1.9.4 | Vulnerable | Kubernetes |
- cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* Versions 1.3.0 – 1.3.10; 1.4.0 – 1.4.12; 1.5.0 – 1.5.8; 1.6.0 – 1.6.13; 1.7.0 to before 1.7.14; 1.8.0 to before 1.8.9; 1.9.0 to before 1.9.4 Vulnerable ·Kubernetes
Remediation
- Fix · CNA Kubernetes (Kubernetes) Fixed in v1.7.14, v1.8.9, v1.9.4
Red Hat 1 advisory
- RHSA-2018:0475 Released 2018-03-12 · Red Hat rating ImportantRed Hat OpenShift Container Platform security update
- Red Hat OpenShift Container Platform 3.3 atomic-openshift-3.3.1.46.11-1.git.4.e236015.el7, atomic-openshift-clients-3.3.1.46.11-1.git.4.e236015.el7, atomic-openshift-clients-redistributable-3.3.1.46.11-1.git.4.e236015.el7 +9
- Red Hat OpenShift Container Platform 3.4 atomic-openshift-3.4.1.44.38-1.git.4.bb8df08.el7, atomic-openshift-clients-3.4.1.44.38-1.git.4.bb8df08.el7, atomic-openshift-clients-redistributable-3.4.1.44.38-1.git.4.bb8df08.el7 +9
- Red Hat OpenShift Container Platform 3.5 atomic-openshift-3.5.5.31.48-1.git.4.ff6153e.el7, atomic-openshift-clients-3.5.5.31.48-1.git.4.ff6153e.el7, atomic-openshift-clients-redistributable-3.5.5.31.48-1.git.4.ff6153e.el7 +9
- Red Hat OpenShift Container Platform 3.6 atomic-openshift-3.6.173.0.96-1.git.4.e6301f8.el7, atomic-openshift-clients-3.6.173.0.96-1.git.4.e6301f8.el7, atomic-openshift-clients-redistributable-3.6.173.0.96-1.git.4.e6301f8.el7 +12
- Red Hat OpenShift Container Platform 3.7 atomic-openshift-3.7.23-1.git.5.83efd71.el7, atomic-openshift-clients-3.7.23-1.git.5.83efd71.el7, atomic-openshift-clients-redistributable-3.7.23-1.git.5.83efd71.el7 +13
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Kubernetes — RHSA-2018:0475
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2017-14756 Improper access control in KubernetesPriority LOW 33
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Container Platform 3.3 | Fixed | RHSA-2018:0475 |
| Red Hat OpenShift Container Platform 3.4 | Fixed | RHSA-2018:0475 |
| Red Hat OpenShift Container Platform 3.5 | Fixed | RHSA-2018:0475 |
| Red Hat OpenShift Container Platform 3.6 | Fixed | RHSA-2018:0475 |
| Red Hat OpenShift Container Platform 3.7 | Fixed | RHSA-2018:0475 |
Not affected: 1 product
- Red Hat Storage 3
Timeline
- 2026-10-02 Threatist record created from CVE-2017-1002101
- 2026-10-03 Alias added: GHSA-rqgw-vh6p-qf7j
References
More Kubernetes vulnerabilities
- TI-2018-16130 Improper privilege management in Kubernetes CVSS 3.0CRITICAL 9.8
- TI-2019-08418 Kubernetes kubelet exposes /debug/pprof info on healthz port CVSS 3.1HIGH 8.2
- TI-2023-05086 Kubernetes - Windows nodes - Insufficient input sanitization in in-tree storage plugin leads to privilege escalation CVSS 3.1HIGH 8.8
- TI-2023-03433 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation CVSS 3.1HIGH 8.8
- TI-2023-02285 Bypass of seccomp profile enforcement CVSS 3.1MEDIUM 5.5
- TI-2019-08423 Kubernetes API Server JSON/YAML parsing vulnerable to resource exhaustion attack CVSS 3.1HIGH 7.5
Sources
- CVE-2017-1002101 · CVE Program
- CVE-2017-1002101 · NVD
- FIRST EPSS
- GHSA-rqgw-vh6p-qf7j · GitHub Advisory Database · CC BY 4.0
- CVE-2017-1002101 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences