CVE-2021-38155

    Dashboard / Vulnerabilities / CVE-2021-38155

    CVE-2021-38155

    Published: 6 Aug 2021Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html, http://www.openwall.com/lists/oss-security/2021/08/10/5, https://launchpad.net/bugs/1688137, https://security.openstack.org/ossa/OSSA-2021-003.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 339e7cc798aed24b7697980eb7cf8e20498d436d
    Fixed -c65455965aec303b55bc76388314a2b96a2bc12c

    Affected versions

    19.0.0.0rc2
    19.0.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-38155 | CVE-DB