CVE-2020-12689 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

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@3Ccommits.druid.apache.org3E https://security.openstack.org/ossa/OSSA-2020-004.html https://usn.ubuntu.com/4480-1/ https://www.openwall.com/lists/oss-security/2020/05/06/5

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8