PYSEC-2020-55

    Dashboard / Vulnerabilities / PYSEC-2020-55

    PYSEC-2020-55

    Published: 7 May 2020Last Modified: 10 Jun 2026

    Summary:

    Details: An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2 credential for themselves for a project that they have a specified role on, and then perform an update to the credential user and project, allowing them to masquerade as another user. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.

    References: https://www.openwall.com/lists/oss-security/2020/05/06/5, https://bugs.launchpad.net/keystone/+bug/1872733, http://www.openwall.com/lists/oss-security/2020/05/07/2, https://security.openstack.org/ossa/OSSA-2020-004.html, https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2@%3Ccommits.druid.apache.org%3E, https://usn.ubuntu.com/4480-1/, https://github.com/advisories/GHSA-4427-7f3w-mqv6

    Affected packages

    Package

    Name: keystone

    Purl: pkg:pypi/keystone

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -15.0.1

    Affected versions

    12.0.2
    12.0.3

    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
    PYSEC-2020-55 | CVE-DB