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Improper Authentication Affecting go.etcd.io/etcd/v3/auth Open this link in a new tab package, versions >=3.2.0 <3.2.26 >=3.3.0 <3.3.11

0.0
medium

  • Attack Complexity

    Low

  • User Interaction

    Required

  • Confidentiality

    High

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  • snyk-id

    SNYK-GOLANG-GOETCDIOETCDV3AUTH-1083899

  • published

    16 Jan 2019

  • disclosed

    3 Jan 2019

  • credit

    Matt Wheeler

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Introduced: 3 Jan 2019

CVE-2018-16886 Open this link in a new tab
CWE-285 Open this link in a new tab

How to fix?

Upgrade go.etcd.io/etcd/v3/auth to version 3.2.26, 3.3.11 or higher.

Overview

Affected versions of this package are vulnerable to Improper Authentication. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.

Note: This is possible only when role-based access control (RBAC) is used and client-cert-auth is enabled.