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CVE-2021-36784— Privilege escalation for users with create/update permissions in Global Roles

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 Labs Rancher 2.5.13 版本之前的 2.5.x 版本和 2.6.4 版本之前的 2.6.x 版本存在安全漏洞，该漏洞源于存在一个不当权限管理漏洞，允许具有受限管理员角色的用户升级为完全管理员。

CVSS 7.2 · High EPSS 0.90% · P60
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I. Basic Information for CVE-2021-36784

Vulnerability Information
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Vulnerability Title
Privilege escalation for users with create/update permissions in Global Roles
Source: CVE Program / CVE List V5
Vulnerability Description
A Improper Privilege Management vulnerability in SUSE Rancher allows users with the restricted-admin role to escalate to full admin. This issue affects: SUSE Rancher Rancher versions prior to 2.5.13; Rancher versions prior to 2.6.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Rancher Labs Rancher 安全漏洞
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 Labs Rancher 2.5.13 版本之前的 2.5.x 版本和 2.6.4 版本之前的 2.6.x 版本存在安全漏洞，该漏洞源于存在一个不当权限管理漏洞，允许具有受限管理员角色的用户升级为完全管理员。
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 ~ 2.5.13 -
SUSE Rancher Rancher ~ 2.6.4 -

II. Public POCs for CVE-2021-36784

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III. Intelligence Information for CVE-2021-36784

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Vendor Advisories for CVE-2021-36784 (1)

Same Patch Batch · SUSE · 2022-05-02 · 3 CVEs total

CVE-2021-36778 7.3 HIGH Exposure of repository credentials to external third-party sources
CVE-2021-4200 5.4 MEDIUM Write access to the Catalog for any user when restricted-admin role is enabled

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-269