CVEvulnerability
CVE-2018-16886
8.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-01-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.0 ([email protected])
- 6.8 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-287
Description
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.
Affected configurations
• etcd etcd (>= 3.2.0 < 3.2.26)
• etcd etcd (>= 3.3.0 < 3.3.11)
• redhat enterprise linux desktop 7.0
• redhat enterprise linux server 7.0
• redhat enterprise linux workstation 7.0
• fedoraproject fedora 30
Related
Weakness · CWE (1)
- CWE-287 Improper Authentication weakness
References
- http://www.securityfocus.com/bid/106540 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0237 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1352 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 Issue Tracking, Patch, Third Party Advisory
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication Release Notes
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/ lists.fedoraproject.org
- http://www.securityfocus.com/bid/106540 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0237 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1352 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 Issue Tracking, Patch, Third Party Advisory
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication Release Notes
- https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/ lists.fedoraproject.org