Openstack keystone: openstack keystone: authorization bypass via improper ec2 token handling
Published Dec 18, 2012
5.4
MEDIUMCVSS 3.1
EPSS 2.05%
Description
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.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Red Hat | Red Hat OpenStack Platform 13 (Queens) | affected |
| |||
| Red Hat | Red Hat OpenStack Platform 16.2 | affected |
| |||
| Red Hat | Red Hat OpenStack Platform 17.1 | affected |
| |||
| Red Hat | Red Hat OpenStack Platform 18.0 | affected |
|
No data.
Red Hat OpenStack Platform 13 (Queens)
redhat-user-workloads/openstack-keystone
Fix deferred
Red Hat OpenStack Platform 16.2
openstack-keystone
Fix deferred
Red Hat OpenStack Platform 16.2
redhat-user-workloads/openstack-keystone
Fix deferred
Red Hat OpenStack Platform 17.1
openstack-keystone
Fix deferred
Red Hat OpenStack Platform 17.1
redhat-user-workloads/openstack-keystone
Fix deferred
Red Hat OpenStack Platform 18.0
openstack-keystone
Fix deferred
Red Hat OpenStack Platform 18.0
redhat-user-workloads/openstack-keystone
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenStack Platform 13 (Queens) | redhat-user-workloads/openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 16.2 | openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 16.2 | redhat-user-workloads/openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 17.1 | openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 17.1 | redhat-user-workloads/openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 18.0 | openstack-keystone | Fix deferred | n/a |
| Red Hat OpenStack Platform 18.0 | redhat-user-workloads/openstack-keystone | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:S/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.05% (0.02055) | 80.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.04% (0.02038) | 78.53th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.61% (0.00606) | 67.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.08% (0.02076) | 73.31th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.61% (0.00606) | 67.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00264) | 66.54th | v3 (v2023.03.01) |
| May 7, 2024 | 0.26% (0.00264) | 65.89th | v3 (v2023.03.01) |
| Nov 7, 2023 | 0.26% (0.00264) | 63.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.27% (0.00271) | 62.72th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.19% (0.02186) | 80.97th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.19% (0.02186) | 80.49th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.19% (0.02186) | 79.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.19% (0.02186) | 57.93th | v2 (v2022.01.01) |
References (19)
- http://lists.fedoraproject.org/pipermail/package-announce/2012-December/094286.html
- http://rhn.redhat.com/errata/RHSA-2012-1556.html
- http://rhn.redhat.com/errata/RHSA-2012-1557.html
- http://secunia.com/advisories/51423 Vendor Advisory
- http://secunia.com/advisories/51436 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/11/28/5 Patch
- http://www.openwall.com/lists/oss-security/2012/11/28/6 Patch
- http://www.securityfocus.com/bid/56726
- http://www.ubuntu.com/usn/USN-1641-1
- https://access.redhat.com/security/cve/CVE-2012-5571 vdb-entryx_refsource_REDHATVendor Advisory
- https://bugs.launchpad.net/keystone/+bug/1064914 Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
- https://github.com/advisories/GHSA-qvpr-qm6w-6rcc Advisory
- https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b Patch
- https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19 Patch
- https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653 Patch
- https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2012-35.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2012-5571
- https://www.cve.org/CVERecord?id=CVE-2012-5571
Change history (0)
No recorded changes yet.