CVE-2021-40797
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2:19.0.0-1 |
| sid | Fixed | 2:19.0.0-1 |
| forky | Fixed | 2:19.0.0-1 |
| bullseye | Fixed | 2:17.2.1-0+deb11u1 |
| bookworm | Fixed | 2:19.0.0-1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-40797
- https://github.com/openstack/neutron/commit/e610a5eb9e71aa2549fb11e2139370d227787da2
- https://github.com/openstack/neutron
- https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-329.yaml
- https://launchpad.net/bugs/1942179
- https://security.openstack.org/ossa/OSSA-2021-006.html
- http://www.openwall.com/lists/oss-security/2021/09/09/2
- https://www.suse.com/security/cve/CVE-2021-40797.html
- https://security-tracker.debian.org/tracker/CVE-2021-40797
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.