GHSA-4427-7f3w-mqv6

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GHSA-4427-7f3w-mqv6

Summary: OpenStack Keystone V3 /credentials endpoint policy logic allows to change credentials owner or target project ID

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://nvd.nist.gov/vuln/detail/CVE-2020-12691, https://github.com/openstack/keystone/commit/37e9907a176dad6843819b1bec4946c3aecc4548, https://github.com/openstack/keystone/commit/40cbb7bebd50276412daa1981ff5a7c7b3b899a5, https://github.com/openstack/keystone/commit/95b2bbeab113d9f04d1c81f7f1b48bf692bce979, https://bugs.launchpad.net/keystone/+bug/1872733, https://github.com/openstack/keystone, https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2020-55.yaml, https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa@%3Ccommits.druid.apache.org%3E, https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2@%3Ccommits.druid.apache.org%3E, https://security.openstack.org/ossa/OSSA-2020-004.html, https://usn.ubuntu.com/4480-1, https://www.openwall.com/lists/oss-security/2020/05/06/5, http://www.openwall.com/lists/oss-security/2020/05/07/2