CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2020-12691
High (8.8). EPSS 4.9% chance of exploitation in the next 30 days. Fixed in keystone 15.0.1, 16.0.1.
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.
Severity
- EPSS
- 4.9% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- openstack:keystone
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4427-7f3w-mqv6 | PyPI | keystone | <15.0.1 | 15.0.1 |
| GHSA-4427-7f3w-mqv6 | PyPI | keystone | >=16.0.0 <16.0.1 | 16.0.1 |
| PYSEC-2020-55 | PyPI | keystone | <15.0.1 | 15.0.1 |
References
- http://www.openwall.com/lists/oss-security/2020/05/07/2
- https://bugs.launchpad.net/keystone/+bug/1872733
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://security.openstack.org/ossa/OSSA-2020-004.html