CVE-2021-40797

Public Exploit

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.34%
Vendor Advisory openstack.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://launchpad.net/bugs/1942179 issue tracking exploit third party advisory
https://security.openstack.org/ossa/OSSA-2021-006.html patch vendor advisory
http://www.openwall.com/lists/oss-security/2021/09/09/2 mailing list third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-40797?
CVE-2021-40797 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40797?
To fix CVE-2021-40797, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40797 being actively exploited in the wild?
It is possible that CVE-2021-40797 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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