Vulnerability in Keystone OpenStack Identity
CVE-2016-4911
The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x before 9.0.1 (mitaka) allows remote authenticated users to prevent revocation of a chain of tokens and bypass intended access restrictions by rescoping a token.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Keystone OpenStack Identity — versions 9.0.0.0
Weakness classification (CWE)
References
- bugs.launchpad.net/keystone/+bug/1577558 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/05/17/10 (mailing-list, Mailing List)
- www.securityfocus.com/bid/90728 (VDB Entry, Third Party Advisory, vdb-entry)
- security.openstack.org/ossa/OSSA-2016-008.html (Patch, Vendor Advisory)
- review.openstack.org/ (Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/05/17/11 (mailing-list, Mailing List)
Frequently asked questions
- What is CVE-2016-4911?
- CVE-2016-4911 is a medium-severity vulnerability in Keystone OpenStack Identity, classified under Improper Access Control. CVSS score: 4.3/10. Published 2016-06-13.
- How severe is CVE-2016-4911?
- Medium severity. CVSS v3 base score is 4.3 out of 10.