CVE-2020-12689
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.56% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- openstack/keystone · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2020/05/07/2Mailing List, Third Party Advisory
- https://bugs.launchpad.net/keystone/+bug/1872735Patch, Third Party Advisory
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://security.openstack.org/ossa/OSSA-2020-004.htmlVendor Advisory
- https://usn.ubuntu.com/4480-1/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/05/06/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/05/07/2Mailing List, Third Party Advisory
- https://bugs.launchpad.net/keystone/+bug/1872735Patch, Third Party Advisory
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://security.openstack.org/ossa/OSSA-2020-004.htmlVendor Advisory
- https://usn.ubuntu.com/4480-1/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/05/06/5Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.