UBUNTU-CVE-2018-16886
- Source
- https://ubuntu.com/security/CVE-2018-16886
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16886.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-16886
- Upstream
- Published
- 2019-01-14T19:29:00Z
- Modified
- 2025-09-08T16:45:01Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
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
-
- https://ubuntu.com/security/CVE-2018-16886
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886
- https://github.com/etcd-io/etcd/pull/10366
- https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2
- https://github.com/etcd-io/etcd/commit/a9a9466fb8ba11ad7bb6a44d7446fbd072d59887
- https://github.com/etcd-io/etcd/commit/99704e2a97e8710da942bdc737417fc9c9a2c03f
- https://github.com/etcd-io/etcd/commit/83c051b701d33261eef91a719e4421c81b000ba4
- https://github.com/etcd-io/etcd/pull/10386
- https://www.cve.org/CVERecord?id=CVE-2018-16886
Affected packages
Ubuntu:Pro:18.04:LTS / etcd
Package
- Name
- etcd
- Purl
- pkg:deb/ubuntu/etcd@3.2.17+dfsg-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Affected versions
3.*
3.1.0-1
3.2.9+dfsg-2
3.2.9+dfsg-3
3.2.17+dfsg-1
3.2.17+dfsg-1ubuntu0.1~esm1
3.2.17+dfsg-1ubuntu0.1
3.2.17+dfsg-1ubuntu0.1+esm1
3.2.17+dfsg-1ubuntu0.1+esm2
Ecosystem specific
{
"binaries": [
{
"binary_version": "3.2.17+dfsg-1ubuntu0.1+esm2",
"binary_name": "etcd"
},
{
"binary_version": "3.2.17+dfsg-1ubuntu0.1+esm2",
"binary_name": "etcd-client"
},
{
"binary_version": "3.2.17+dfsg-1ubuntu0.1+esm2",
"binary_name": "etcd-server"
},
{
"binary_version": "3.2.17+dfsg-1ubuntu0.1+esm2",
"binary_name": "golang-etcd-server-dev"
}
]
}