CVE-2018-16886 (GCVE-0-2018-16886)
Vulnerability from cvelistv5
Published
2019-01-14 19:00
Modified
2024-08-05 10:32
Severity ?
6.8 (Medium) - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
Summary
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.
References
secalert@redhat.com http://www.securityfocus.com/bid/106540 Third Party Advisory, VDB Entry
secalert@redhat.com https://access.redhat.com/errata/RHSA-2019:0237 Third Party Advisory
secalert@redhat.com https://access.redhat.com/errata/RHSA-2019:1352 Third Party Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication Release Notes
secalert@redhat.com https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication Release Notes
secalert@redhat.com https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/
secalert@redhat.com https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/
af854a3a-2127-422b-91ae-364da2661108 http://www.securityfocus.com/bid/106540 Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2019:0237 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://access.redhat.com/errata/RHSA-2019:1352 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication Release Notes
af854a3a-2127-422b-91ae-364da2661108 https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication Release Notes
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/
Impacted products
Vendor Product Version
The etcd Project etcd: Version: versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11
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  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.