Vulnerability in OpenStack Neutron
CVE-2021-40797
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
Weakness classification (CWE)
References
- launchpad.net/bugs/1942179 (Exploit, Third Party Advisory, Issue Tracking)
- security.openstack.org/ossa/OSSA-2021-006.html (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/09/09/2 (mailing-list, Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40797?
- CVE-2021-40797 is a medium-severity vulnerability in OpenStack Neutron, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 6.5/10. Published 2021-09-08.
- How severe is CVE-2021-40797?
- Medium severity. CVSS v3 base score is 6.5 out of 10.