Security readout for executives and security teams
Plain-English summary
An authenticated OpenStack user could make Neutron create quota-untracked resources by querying security groups for an invalid project. At scale, this can consume resources and reduce service availability. The main business risk is tenant-driven denial of service in affected Red Hat OpenStack deployments.
Executive priority
Treat as a moderate operational-risk issue. Prioritize patching if affected OpenStack environments are tenant-facing or allow many non-administrative users. It is less urgent than remote unauthenticated code execution, but it can still affect service availability.
Technical view
CVE-2023-3637 is a CWE-400 uncontrolled resource consumption issue in openstack-neutron. A remote authenticated user can trigger security group resource creation outside the user's quota through invalid-project security group queries. The CVSS 3.1 score is 4.3, with low availability impact and no confidentiality or integrity impact listed.
Likely exposure
Exposure is most relevant to Red Hat OpenStack Platform 16.2 and Red Hat OpenStack Platform 13 Queens Operational Tools deployments using affected openstack-neutron packages. Source data lists RHOSP 16.1, 17.0, 17.1, and 18.0 as unaffected.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires authenticated access to the OpenStack environment. Risk rises in multi-tenant clouds where untrusted or weakly governed tenant accounts can repeatedly interact with Neutron APIs.
Researcher notes
The available evidence identifies affected Red Hat product lines and the quota-bypass resource consumption behavior, but not detailed exploit activity. Keep analysis bounded to authenticated DoS potential and validate against vendor package state rather than generic upstream assumptions.
Mitigation direction
- Apply the Red Hat advisory RHSA-2023:4283 where applicable.
- Check Red Hat CVE guidance for supported fixed package versions.
- Review tenant access controls for Neutron API exposure.
- Monitor resource growth and quota anomalies in affected deployments.
- Escalate to Red Hat support if no supported update path is clear.
Validation and detection
- Inventory Red Hat OpenStack Platform versions and openstack-neutron packages.
- Confirm affected RHOSP 16.2 and RHOSP 13 Operational Tools instances are patched.
- Review Neutron logs for abnormal authenticated security group activity.
- Verify quota enforcement after updates using approved administrative validation.
- Document unaffected RHOSP versions separately to avoid unnecessary remediation work.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-3637 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2023:4283CVE reference · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-3637CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2222270CVE reference · issue-tracking, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.