CVE-2021-38155

Aliases:GHSA-4225-97pr-rr52
Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 06 Aug 2021, 00:00
Last modified:04 Aug 2024, 01:37

Vulnerability Summary

Overall Risk (default)
medium
40/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.74% LOW
1% probability -0.42%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

06 Aug 2021, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 01:37
Last Modified
Vulnerability information updated

Description

OpenStack Keystone 10.x through 16.x before 16.0.2, 17.x before 17.0.1, 18.x before 18.0.1, and 19.x before 19.0.1 allows information disclosure during account locking (related to PCI DSS features). By guessing the name of an account and failing to authenticate multiple times, any unauthenticated actor could both confirm the account exists and obtain that account's corresponding UUID, which might be leveraged for other unrelated attacks. All deployments enabling security_compliance.lockout_failure_attempts are affected.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.74%• Percentile: 73%

Techniques & Countermeasures

  • CWE-307•Improper Restriction of Excessive Authentication Attempts

    The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

Affected Systems

  • openstack•keystone

    ≥ 10.0.0, < 16.0.2 | ≥ 17.0.0, < 17.0.1 | ≥ 18.0.0, < 18.0.1 | ≥ 19.0.0, < 19.0.1

  • PyPI•keystone

    ≥ 10.0, < 16.0.2 | ≥ 17.0, < 17.0.1 | ≥ 18.0, < 18.0.1 | ≥ 19.0, < 19.0.1

References (9)