Vulnerability · Published Sep 8, 2021 · Assigned by mitre
CVE-2021-40797
Medium 6.5
In plain English
A medium-severity security flaw in the neutron package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.8%top 21.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | neutron | 2:19.0.0-1 | DEBIAN-CVE-2021-40797 |
| Debian:13 | neutron | 2:19.0.0-1 | DEBIAN-CVE-2021-40797 |
| Debian:14 | neutron | 2:19.0.0-1 | DEBIAN-CVE-2021-40797 |
| PyPI | neutron | 18.1.1 | GHSA-cpx3-696p-3cw9 |
| PyPI | neutron | 16.4.1, 17.2.1, 18.1.1 | PYSEC-2021-329 |
| PyPI | neutron | 16.4.1 | GHSA-cpx3-696p-3cw9 |
| PyPI | neutron | 17.2.1 | GHSA-cpx3-696p-3cw9 |
| Ubuntu:22.04:LTS | neutron | 2:20.3.0-0ubuntu1.1 | USN-6067-1 |
Affected products (as reported)
References
- https://launchpad.net/bugs/1942179 x_refsource_MISC
- https://security.openstack.org/ossa/OSSA-2021-006.html x_refsource_CONFIRM
- [oss-security] 20210909 [OSSA-2021-006] Neutron: Routes middleware memory leak for nonexistent controllers (CVE-2021-40797) mailing-list, x_refsource_MLIST