VulnerabilityModified
CVE-2021-40797
By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.
MEDIUM 6.5EPSS 1.77%
Does this matter?
Lower severity and a low EPSS score (1.77%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in the routes middleware in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.77% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-772
- Affected
- openstack/neutron
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/09/09/2Mailing List, Patch, Third Party Advisory
- https://launchpad.net/bugs/1942179Exploit, Issue Tracking, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2021-006.htmlPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2021/09/09/2Mailing List, Patch, Third Party Advisory
- https://launchpad.net/bugs/1942179Exploit, Issue Tracking, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2021-006.htmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.