CVE-2020-12691

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.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

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
• https://usn.ubuntu.com/4480-1/
• https://www.suse.com/security/cve/CVE-2020-12691.html
• https://security-tracker.debian.org/tracker/CVE-2020-12691