CVE-2018-16886
CVSS V2 Medium 6.8
CVSS V3 High 8.1
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.
Overview
- CVE ID
- CVE-2018-16886
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2019-01-14T19:29:00
- Last Modified Date
- 2019-10-24T12:24:01
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:* | 1 | OR | 3.2.0 | 3.2.26 |
| cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:* | 1 | OR | 3.3.0 | 3.3.11 |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication | Release Notes |
| https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication | Release Notes |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 | Issue Tracking Patch Third Party Advisory |
| http://www.securityfocus.com/bid/106540 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2019:0237 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/ | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/ | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:1352 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-16886 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16886 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:00:59 | Added to TrackCVE | |||
| 2022-12-03 16:22:44 | 2019-01-14T19:29Z | 2019-01-14T19:29:00 | CVE Published Date | updated |
| 2022-12-03 16:22:44 | 2019-10-24T12:24:01 | CVE Modified Date | updated | |
| 2022-12-03 16:22:44 | Analyzed | Vulnerability Status | updated |