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CVE-2022-21953— Authenticated user can gain unauthorized shell pod and kubectl access in the local cluster

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。 SUSE Rancher存在安全漏洞，该漏洞源于存在授权缺失漏洞，允许经过身份验证的用户在本地集群中创建未经授权的访问。

CVSS 7.4 · High EPSS 0.47% · P39
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I. Basic Information for CVE-2022-21953

Vulnerability Information
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Vulnerability Title
Authenticated user can gain unauthorized shell pod and kubectl access in the local cluster
Source: CVE Program / CVE List V5
Vulnerability Description
A Missing Authorization vulnerability in of SUSE Rancher allows authenticated user to create an unauthorized shell pod and kubectl access in the local cluster This issue affects: SUSE Rancher Rancher versions prior to 2.5.17; Rancher versions prior to 2.6.10; Rancher versions prior to 2.7.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
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。 SUSE Rancher存在安全漏洞，该漏洞源于存在授权缺失漏洞，允许经过身份验证的用户在本地集群中创建未经授权的访问。
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 ~ 2.5.17 -

II. Public POCs for CVE-2022-21953

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III. Intelligence Information for CVE-2022-21953

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Vendor Advisories for CVE-2022-21953 (1)

Same Patch Batch · SUSE · 2023-02-07 · 9 CVEs total

CVE-2022-43757 9.9 CRITICAL Rancher: Exposure of sensitive fields
CVE-2022-31254 7.8 HIGH rmt-server-pubcloud allows to escalate from user _rmt to root
CVE-2022-43758 7.6 HIGH Rancher: Command injection in Git package
CVE-2022-31249 7.5 HIGH [RANCHER] OS command injection in Rancher and Fleet
CVE-2022-43759 7.2 HIGH Rancher: Privilege escalation via promoted roles
CVE-2022-43755 7.1 HIGH Rancher: Non-random authentication token
CVE-2023-22643 6.3 MEDIUM libzypp-plugin-appdata: potential arbitrary code execution via shell injection due to `os.
CVE-2022-43756 5.9 MEDIUM Rancher/Wrangler: Denial of service when processing Git credentials

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-862

V. Comments for CVE-2022-21953

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