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CVE-2019-3779— Cloud Foundry Container Runtime allows a user to bypass security policy when talking to ETCD

Quick assessment

Affected
Cloud Foundry Cloud Foundry Container Runtime (CFCR)
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.

Pivotal Software Pivotal Container Service（PKS）是美国Pivotal Software公司的一款基于Kubernetes的容器服务。 Pivotal Software PKS 1.2.9之前的1.2.版本和1.3.2之前的1.3.x版本中存在安全漏洞。攻击者可利用该漏洞获取凭证，并获取ETCD的访问权限。

AI Predicted 8.6 Difficulty: Easy EPSS 0.67% · P50
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I. Basic Information for CVE-2019-3779

Vulnerability Information
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Vulnerability Title
Cloud Foundry Container Runtime allows a user to bypass security policy when talking to ETCD
Source: CVE Program / CVE List V5
Vulnerability Description
Cloud Foundry Container Runtime, versions prior to 0.29.0, deploys Kubernetes clusters utilize the same CA (Certificate Authority) to sign and trust certs for ETCD as used by the Kubernetes API. This could allow a user authenticated with a cluster to request a signed certificate leveraging the Kubernetes CSR capability to obtain a credential that could escalate privilege access to ETCD.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Pivotal Software PKS 权限许可和访问控制漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pivotal Software Pivotal Container Service（PKS）是美国Pivotal Software公司的一款基于Kubernetes的容器服务。 Pivotal Software PKS 1.2.9之前的1.2.版本和1.3.2之前的1.3.x版本中存在安全漏洞。攻击者可利用该漏洞获取凭证，并获取ETCD的访问权限。
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
Cloud Foundry Cloud Foundry Container Runtime (CFCR) All ~ v0.29.0 -

II. Public POCs for CVE-2019-3779

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III. Intelligence Information for CVE-2019-3779

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Security Blog Posts for CVE-2019-3779 (1)

IV. Related Vulnerabilities

Same product: Cloud Foundry Container Runtime (CFCR)
Same vendor: Cloud Foundry
Same weakness: CWE-284

V. Comments for CVE-2019-3779

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