CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2020-12689
High (8.8). EPSS 1.6% 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 user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. 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
- 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
- CWE
- CWE-269
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- openstack:keystone
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-chgw-36xv-47cw | PyPI | keystone | <15.0.1 | 15.0.1 |
| GHSA-chgw-36xv-47cw | PyPI | keystone | >=16.0.0 <16.0.1 | 16.0.1 |
| PYSEC-2020-53 | 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/1872735
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://security.openstack.org/ossa/OSSA-2020-004.html
- https://usn.ubuntu.com/4480-1/