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CVE-2021-36783— Rancher: Failure to properly sanitize credentials in cluster template answers

Quick assessment

Affected
SUSE Rancher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rancher Labs Rancher是美国Rancher Labs公司的一套开源的企业级容器管理平台。 Rancher for SUSE 2.5.0到2.5.12版本、2.6.0到2.6.3版本存在信息泄露漏洞，该漏洞源于敏感信息明文存储，任何对 Kubernetes API 中的对象具有读取权限的人都可以检索这些敏感数据的明文版本。

CVSS 9.9 · Critical EPSS 0.78% · P54

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2021-36783

Vulnerability Information
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Vulnerability Title
Rancher: Failure to properly sanitize credentials in cluster template answers
Source: CVE Program / CVE List V5
Vulnerability Description
A Insufficiently Protected Credentials vulnerability in SUSE Rancher allows authenticated Cluster Owners, Cluster Members, Project Owners and Project Members to read credentials, passwords and API tokens that have been stored in cleartext and exposed via API endpoints. This issue affects: SUSE Rancher Rancher versions prior to 2.6.4; Rancher versions prior to 2.5.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
Rancher Labs Rancher 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rancher Labs Rancher是美国Rancher Labs公司的一套开源的企业级容器管理平台。 Rancher for SUSE 2.5.0到2.5.12版本、2.6.0到2.6.3版本存在信息泄露漏洞，该漏洞源于敏感信息明文存储，任何对 Kubernetes API 中的对象具有读取权限的人都可以检索这些敏感数据的明文版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Rancher Rancher ~ 2.6.4 -
SUSE Rancher Rancher ~ 2.5.13 -

II. Public POCs for CVE-2021-36783

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III. Intelligence Information for CVE-2021-36783

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Vendor Advisories for CVE-2021-36783 (2)

Same Patch Batch · SUSE · 2022-09-07 · 4 CVEs total

CVE-2021-36782 9.9 CRITICAL Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.manageme
CVE-2022-31247 9.1 CRITICAL Rancher: Downstream cluster privilege escalation through cluster and project role template
CVE-2022-31251 6.5 MEDIUM slurm: %post for slurm-testsuite operates as root in user owned directory

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-522

V. Comments for CVE-2021-36783

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