Medium severity · published Sep 8, 2021
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
6.5
CVSS
1.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Neutron · Openstack
before 16.4.1; 17.0.0 before 17.2.1; 18.0.0 before 18.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40797
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40797
Mailing List
http://www.openwall.com/lists/oss-security/2021/09/09/2
Exploit
https://launchpad.net/bugs/1942179
Patch
https://security.openstack.org/ossa/OSSA-2021-006.html
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