5.3

CVE-2018-20170: openstack keystone

CVSS: 5.3v3.0MediumModified
AliasesPYSEC-2018-9UBUNTU-CVE-2018-20170
Published 17-12-2018Last modified 14-11-2024
Open JSON

Vulnerability summary

CVE-2018-20170 is a medium (CVSS 5.3) vulnerability in openstack keystone. EPSS estimates a 1.12% chance of exploitation in the next 30 days, higher than 65.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.0 (NVD)
EPSS score
1.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 17-12-2018
    PublishedVulnerability first disclosed.
  2. 14-11-2024
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.12%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.12% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Openstack1 product
PyPI1 product
  • keystone< 14.1.0
Ubuntu1 product
  • keystoneAll versions (No fix recorded)

3 vendors · 3 products

References

3 links