# CVE-2017-1002101: Path traversal in Kubernetes

> Attackers can access host filesystem files via subpath volume mounts, requiring Kubernetes upgrades to mitigate.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 13 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-1002101, GHSA-rqgw-vh6p-qf7j

## What is CVE-2017-1002101?

CVE-2017-1002101 is a high-severity path traversal vulnerability in Kubernetes Kubernetes, published on 13 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

Weakness: CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2017-1002101?

It affects 1 product.


Products: Kubernetes Kubernetes.

## How do I fix CVE-2017-1002101?

Upgrade to a fixed version.

## Is CVE-2017-1002101 being exploited?

There is no known exploitation of CVE-2017-1002101 in the wild and no public exploit code.

Public exploit code:

- Writeup of CVE-2017-1002101 with sample "exploit"/escape (github_poc): https://github.com/bgeesaman/subpath-exploit

## Other vulnerabilities in Kubernetes Kubernetes

- [CVE-2018-1002105](https://insights.sbomify.com/CVE-2018-1002105/): Privilege Escalation in Kubernetes (critical 9.8)
- [CVE-2017-1000056](https://insights.sbomify.com/CVE-2017-1000056/): Kubernetes Privilege Escalation (critical 9.8)
- [CVE-2016-1906](https://insights.sbomify.com/CVE-2016-1906/): Authorization bypass in Openshift (critical 9.8)
- [CVE-2023-3676](https://insights.sbomify.com/CVE-2023-3676/): Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation (high 8.8)
- [CVE-2023-3955](https://insights.sbomify.com/CVE-2023-3955/): Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-1002101 and fix it if it is affected.

What it is: CVE-2017-1002101 is a high-severity path traversal vulnerability in Kubernetes Kubernetes, published on 13 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-1002101 in the wild and no public exploit code.

Affected product: Kubernetes Kubernetes. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-1002101/ (Markdown: https://insights.sbomify.com/CVE-2017-1002101/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-1002101
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-1002101
- OSV: https://osv.dev/vulnerability/CVE-2017-1002101

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-1002101/
Summaries are generated and may contain mistakes; the official description above is the record.