Description
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.
References (6)
Core 6
Core References
Vendor Advisory x_refsource_confirm
https://security.openstack.org/ossa/OSSA-2020-004.html
Patch, Third Party Advisory x_refsource_misc
https://bugs.launchpad.net/keystone/+bug/1872735
Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/05/06/5
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/05/07/2
Mailing List mailing-list
x_refsource_mlist
https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4480-1/
Scores
CVSS v3
8.8
EPSS
0.0107
EPSS Percentile
77.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-269
Status
published
Products (4)
canonical/ubuntu_linux
18.04
openstack/keystone
16.0.0
openstack/keystone
< 15.0.1
pypi/keystone
0 - 15.0.1PyPI
Published
May 07, 2020
Tracked Since
Feb 18, 2026