CVE-2018-20170
** DISPUTED ** OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because...
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
- Record
CVE-2018-20170- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
- Record
CVE-2018-20170- Updated
- 2026-11-02
EUVDEUVD-2018-0082 No score
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
- Record
EUVD-2018-0082- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jpv2-hwjh-97c7
** DISPUTED ** OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because...
** DISPUTED ** OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory.
- Record
GHSA-jpv2-hwjh-97c7- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
- Record
CVE-2018-20170- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-20170
OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory
- Record
UBUNTU-CVE-2018-20170- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVPYSEC-2018-9 No score
** DISPUTED ** OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory.
- Record
PYSEC-2018-9- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
keystonePyPI |
before 14.1.0, plus listed versions 12.0.212.0.313.0.213.0.313.0.414.0.014.0.1 |
14.1.0 |
keystoneUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2:8.0.0-0ubuntu12:9.0.0~b1-0ubuntu12:9.0.0~b2-0ubuntu12:9.0.0~b3-0ubuntu12:9.0.0~rc1-0ubuntu1 Show 11 moreShow less2:9.0.0-0ubuntu12:9.0.2-0ubuntu12:9.0.2-0ubuntu22:9.1.0-0ubuntu12:9.2.0-0ubuntu12:9.3.0-0ubuntu12:9.3.0-0ubuntu22:9.3.0-0ubuntu32:9.3.0-0ubuntu3.12:9.3.0-0ubuntu3.22:9.3.0-0ubuntu3.2+esm2 |
None known |
keystoneUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 2:12.0.0-0ubuntu12:13.0.0~b1-0ubuntu12:13.0.0~b2-0ubuntu12:13.0.0~b3-0ubuntu12:13.0.0~rc1-0ubuntu1 Show 7 moreShow less2:13.0.0~rc2-0ubuntu12:13.0.0-0ubuntu12:13.0.1-0ubuntu12:13.0.2-0ubuntu12:13.0.2-0ubuntu32:13.0.4-0ubuntu12:13.0.4-0ubuntu1+esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-20170 is a medium vulnerability (CVSS 5.3) in Openstack Keystone, published December 17, 2018. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 1.12%, the 66th percentile. Fixed in keystone 14.1.0.