CVE-2020-12691
mediumpriority · track · 37OT risk · elevatedEPSS 0.049 · 92 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-4427-7f3w-mqv6OpenStack Keystone V3 /credentials endpoint policy logic allows to change credentials owner or target project ID2022-05-24ghsa · osvUS
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.
- PYSEC-2020-552020-05-07vendor · osvUS
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.
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (33)
External citations — patches, advisories, analysis.
- http://www.nsfocus.net/vulndb/46745cnnvd
- http://www.openwall.com/lists/oss-security/2020/05/07/2cnnvd
- https://access.redhat.com/security/cve/cve-2020-12691cnnvd
- https://bugs.launchpad.net/keystone/+bug/1872733cnnvd
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa@%3Ccommits.druid.apache.org%3Ecnnvd
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2@%3Ccommits.druid.apache.org%3Ecnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-12691cnnvd
- https://packetstormsecurity.com/files/158211/Red-Hat-Security-Advisory-2020-2732-01.htmlcnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan