CVE-2020-15114 (High) detected in github.com/etcd-io/etcd-v3.4.3

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CVE-2020-15114 - High Severity Vulnerability

Vulnerable Library - github.com/etcd-io/etcd-v3.4.3

Distributed reliable key-value store for the most critical data of a distributed system

Dependency Hierarchy:

• k8s.io/kubernetes/cmd/cloud-controller-manager/app-v1.18.2-k3s.1 (Root Library)
  • k8s.io/apiserver/pkg/server/options-20f496186c3e8e4d4f12da0794f26cec36df73b2
    • k8s.io/apiserver/pkg/registry/generic-20f496186c3e8e4d4f12da0794f26cec36df73b2
      • github.com/kubernetes/apiserver/pkg/storage-99350e274cedfff11c934b3371447873d98caba6
        • ❌ github.com/etcd-io/etcd-v3.4.3 (Vulnerable Library)

Found in HEAD commit: d176fc163fbd69f1a628cf9b7ea217423ee02d31

Found in base branch: master

Vulnerability Details

In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until there are no more available file descriptors to accept connections on the gateway.

Publish Date: 2020-08-06

URL: CVE-2020-15114

CVSS 3 Score Details (7.7)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2020-08-06

Fix Resolution: 3.4.10, 3.3.23