What’s Vulnerable › Vulnerabilities
CVE-2020-12690
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-05-07 · updated 2026-06-17
- Weakness: CWE-613
Description
An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The list of roles provided for an OAuth1 access token is silently ignored. Thus, when an access token is used to request a keystone token, the keystone token contains every role assignment the creator had for the project. This results in the provided keystone token having more role assignments than the creator intended, possibly giving unintended escalated access.
Affected products
- OpenStack Keystone: before 15.0.1; 16.0.0 — fixed in 15.0.1
How to fix
Upgrade to a fixed version: OpenStack Keystone 15.0.1. Check the vendor advisory for mitigations.
References
- http://www.openwall.com/lists/oss-security/2020/05/07/3
- https://bugs.launchpad.net/keystone/+bug/1873290
- 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-2020-005.html
- https://usn.ubuntu.com/4480-1/
- https://www.openwall.com/lists/oss-security/2020/05/06/6
- http://www.openwall.com/lists/oss-security/2020/05/07/3
- https://bugs.launchpad.net/keystone/+bug/1873290
- 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-2020-005.html
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