A flaw was found in OpenStack Keystone. A remote attacker could exploit this vulnerability by sending a large HTTP request, specifically by providing a long tenant name when requesting a token. This could lead to a denial of service, consuming excessive CPU and memory resources on the affected system.

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-2419 OpenStack Keystone Grizzly before 2013.1, Folsom, and possibly earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via a large HTTP request, as demonstrated by a long tenant_name when requesting a token.
Github GHSA Github GHSA GHSA-4ppj-4p4v-jf4p OpenStack Keystone Denial of Service vulnerability via a large HTTP request
Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Tue, 07 Apr 2026 07:15:00 +0000

Type Values Removed Values Added
Description OpenStack Keystone Grizzly before 2013.1, Folsom, and possibly earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via a large HTTP request, as demonstrated by a long tenant_name when requesting a token. A flaw was found in OpenStack Keystone. A remote attacker could exploit this vulnerability by sending a large HTTP request, specifically by providing a long tenant name when requesting a token. This could lead to a denial of service, consuming excessive CPU and memory resources on the affected system.
Title Keystone: Large HTTP request DoS Keystone: openstack keystone: denial of service via large http request with long tenant name
Weaknesses CWE-1284
CPEs cpe:/a:redhat:openstack:13
cpe:/a:redhat:openstack:16.2
cpe:/a:redhat:openstack:17.1
cpe:/a:redhat:openstack:18.0
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-07T06:55:17.958Z

Reserved: 2012-12-06T00:00:00.000Z

Link: CVE-2013-0270

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2013-04-12T22:55:01.070

Modified: 2026-04-07T07:16:23.067

Link: CVE-2013-0270

cve-icon Redhat

Severity : Moderate

Publid Date: 2013-01-13T00:00:00Z

Links: CVE-2013-0270 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses