CVE-2018-16886

Published: Jan 14, 2019Modified: Nov 21, 2024

8.1

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 2.2 / Impact: 5.9

Source: NVD

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 (6)

Products: Etcd: Etcd · Redhat: Enterprise Linux Desktop, Enterprise Linux Server, Enterprise Linux Workstation · Fedoraproject: Fedora

1 product

3 products

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Workstation

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Etcd Etcd	From 3.2.0 to 3.2.26
Etcd Etcd	From 3.3.0 to 3.3.11

Configuration B

3 vulnerable

Vulnerable Software	Affected Versions
Redhat Enterprise Linux Desktop	Version 7.0
Redhat Enterprise Linux Server	Version 7.0
Redhat Enterprise Linux Workstation	Version 7.0

Configuration C

1 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 30

Related CWEs

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (16)

http://www.securityfocus.com/bid/106540

Source: secalert@redhat.com

Third Party AdvisoryVDB Entry

https://access.redhat.com/errata/RHSA-2019:0237

Source: secalert@redhat.com

Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:1352

Source: secalert@redhat.com

Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886

Source: secalert@redhat.com

Issue TrackingPatchThird Party Advisory

https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication

Source: secalert@redhat.com

Release Notes

https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication

Source: secalert@redhat.com

Release Notes

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/

Source: secalert@redhat.com

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/

Source: secalert@redhat.com

http://www.securityfocus.com/bid/106540

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryVDB Entry

https://access.redhat.com/errata/RHSA-2019:0237

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://access.redhat.com/errata/RHSA-2019:1352

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPatchThird Party Advisory

https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes

https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.