CVE-2021-40797
OpenStack Neutron Denial of Service YAML Deserialization Vulnerability
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.
INFO
Published Date :
Sept. 8, 2021, 8:15 p.m.
Last Modified :
Sept. 15, 2021, 7:01 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-40797.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/09/09/2 | Mailing List Patch Third Party Advisory |
| https://launchpad.net/bugs/1942179 | Exploit Issue Tracking Third Party Advisory |
| https://security.openstack.org/ossa/OSSA-2021-006.html | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-40797 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-40797 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 15, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2021/09/09/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/09/09/2 Mailing List, Patch, Third Party Advisory Changed Reference Type https://launchpad.net/bugs/1942179 No Types Assigned https://launchpad.net/bugs/1942179 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://security.openstack.org/ossa/OSSA-2021-006.html No Types Assigned https://security.openstack.org/ossa/OSSA-2021-006.html Patch, Vendor Advisory Added CWE NIST CWE-772 Added CPE Configuration OR *cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* versions up to (excluding) 16.4.1 *cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.2.1 *cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:* versions from (including) 18.0.0 up to (excluding) 18.1.1 -
CVE Modified by [email protected]
Sep. 09, 2021
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2021/09/09/2 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 09, 2021
Action Type Old Value New Value Added Reference https://security.openstack.org/ossa/OSSA-2021-006.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-40797 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-40797
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.04%
score
0.52235
percentile