OpenStack Keystone V3 /credentials endpoint policy logic allows to change credentials owner or target project ID
GHSA-4427-7f3w-mqv6 · CVE-2020-12691 · PYSEC-2020-55
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Description
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
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-12691
- WEB https://github.com/openstack/keystone/commit/37e9907a176dad6843819b1bec4946c3aecc4548
- WEB https://github.com/openstack/keystone/commit/40cbb7bebd50276412daa1981ff5a7c7b3b899a5
- WEB https://github.com/openstack/keystone/commit/95b2bbeab113d9f04d1c81f7f1b48bf692bce979
- WEB https://bugs.launchpad.net/keystone/+bug/1872733
- PACKAGE https://github.com/openstack/keystone
- WEB https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2020-55.yaml
- WEB https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa@%3Ccommits.druid.apache.org%3E
- WEB https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2@%3Ccommits.druid.apache.org%3E
- WEB https://security.openstack.org/ossa/OSSA-2020-004.html
- WEB https://usn.ubuntu.com/4480-1
- WEB https://www.openwall.com/lists/oss-security/2020/05/06/5
- WEB http://www.openwall.com/lists/oss-security/2020/05/07/2
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