Vulnerability in OpenStack Keystone
CVE-2020-12690
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- OpenStack Keystone — versions 16.0.0
Weakness classification (CWE)
References
- security.openstack.org/ossa/OSSA-2020-005.html (Vendor Advisory)
- bugs.launchpad.net/keystone/+bug/1873290 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/05/06/6 (Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/05/07/3 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57f… (mailing-list)
- usn.ubuntu.com/4480-1/ (vendor-advisory)
- lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490… (mailing-list)
Frequently asked questions
- What is CVE-2020-12690?
- CVE-2020-12690 is a high-severity vulnerability in OpenStack Keystone, classified under Insufficient Session Expiration. CVSS score: 8.8/10. Published 2020-05-07.
- How severe is CVE-2020-12690?
- High severity. CVSS v3 base score is 8.8 out of 10.