etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. 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.
CVE-2018-16886 - High Severity Vulnerability
Auditing for TLS certificates (Go code)
Library home page: https://proxy.golang.org/github.com/google/certificate-transparency-go/@v/v1.0.20.zip
Dependency Hierarchy: - github.com/docker/swarmkit/ca-5a5494a9a7b408b790533a5e4e1cb43ca1c32aad (Root Library) - github.com/cloudflare/cfssl/initca-1.3.2 - github.com/cloudflare/cfssl/config-1.3.2 - github.com/cloudflare/cfssl/helpers-1.3.2 - :x: **github.com/google/certificate-transparency-go-v1.0.20** (Vulnerable Library)
Found in HEAD commit: 74c0db1e26014a7f5e115cea39a5b8613c912db7
Found in base branch: master
etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. 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.
Publish Date: 2019-01-14
URL: CVE-2018-16886
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://nvd.nist.gov/vuln/detail/CVE-2018-16886
Release Date: 2019-01-14
Fix Resolution: 3.2.26,3.3.11