CVE-2018-20170

Publication date 17 December 2018

Last updated 4 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
keystone	19.10 eoan	Ignored
	19.04 disco	Ignored
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Not in release

Notes

mdeslaur

disputed, marking as ignored

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.3 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	Low
Integrity impact	None
Availability impact	None

Scores

Parameter	Value
Base score	5.3 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N