UBUNTU-CVE-2018-16886

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Source
https://ubuntu.com/security/notices/UBUNTU-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.osv.dev/v1/vulns/UBUNTU-CVE-2018-16886
Related
Published
2019-01-14T19:29:00Z
Modified
2019-01-14T19:29:00Z
Severity
  • 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
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

Affected packages

Ubuntu:Pro:18.04:LTS / etcd

Package

Name
etcd

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / etcd

Package

Name
etcd
Purl
pkg:deb/ubuntu/etcd@3.2.26+dfsg-3?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.2.26+dfsg-3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "etcd-server-dbgsym": "3.2.26+dfsg-3",
            "golang-etcd-server-dev": "3.2.26+dfsg-3",
            "etcd": "3.2.26+dfsg-3",
            "etcd-client-dbgsym": "3.2.26+dfsg-3",
            "etcd-server": "3.2.26+dfsg-3",
            "etcd-client": "3.2.26+dfsg-3"
        }
    ]
}