Auth bypass in OpenStack Essex
CVE-2012-5571
A flaw was found in OpenStack Keystone. This vulnerability allows remote authenticated users to bypass intended authorization restrictions. This occurs because OpenStack Keystone does not properly handle EC2 (Elastic Compute Cloud) tokens when a user's role has been removed from a tenant. An attacker can leverage a token associated with a removed user role to gain unauthorized access.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.021 (81.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
References
- lists.fedoraproject.org/pipermail/package-announce/2012-December/094286.html
- rhn.redhat.com/errata/RHSA-2012-1556.html
- rhn.redhat.com/errata/RHSA-2012-1557.html
- secunia.com/advisories/51423 (Vendor Advisory)
- secunia.com/advisories/51436 (Vendor Advisory)
- www.openwall.com/lists/oss-security/2012/11/28/5 (Patch)
- www.openwall.com/lists/oss-security/2012/11/28/6 (Patch)
- www.securityfocus.com/bid/56726
- www.ubuntu.com/usn/USN-1641-1
- access.redhat.com/security/cve/CVE-2012-5571 (vdb-entry)
Frequently asked questions
- What is CVE-2012-5571?
- CVE-2012-5571 is a medium-severity vulnerability in OpenStack Essex, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2012-12-18.
- How severe is CVE-2012-5571?
- Medium severity. CVSS v3 base score is 5.4 out of 10.