Security readout for executives and security teams
Plain-English summary
CVE-2019-1002100 is a Kubernetes API server denial-of-service issue. A user who already has permission to send patch requests could cause excessive API server resource consumption, potentially disrupting cluster management and workloads that depend on API availability.
Executive priority
Treat as a moderate operational risk. It is not described as data theft or code execution, but API server denial of service can disrupt cluster operations and incident response. Remediate old clusters and reduce excessive patch privileges.
Technical view
Kubernetes versions before v1.11.8, v1.12.6, and v1.13.4 mishandled specially crafted JSON Patch requests. The flaw requires network access to the API server and low-privileged authorization to make patch requests. Impact is availability only, with CVSS 6.5.
Likely exposure
Exposure is most likely in old self-managed or vendor-packaged Kubernetes clusters below the fixed versions, especially where broad RBAC grants allow patch operations. Modern supported clusters should be checked by version and vendor advisory status.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Abuse requires an authenticated principal authorized to patch Kubernetes resources, so compromised service accounts or overbroad RBAC could matter.
Researcher notes
The key exposure condition is authorized patch access to the API server. Sources identify JSON Patch processing as the resource exhaustion path, but do not provide evidence of public exploitation in this bundle. Avoid assuming unauthenticated impact.
Mitigation direction
- Upgrade affected control planes to v1.11.8, v1.12.6, v1.13.4, or later supported releases.
- Review Kubernetes distribution advisories for vendor-specific fixed packages.
- Restrict patch permissions to least-privileged users and service accounts.
- Monitor API server CPU, memory, latency, and error-rate anomalies.
- Prioritize remediation for internet-exposed or broadly accessible API servers.
Validation and detection
- Inventory Kubernetes control-plane versions across all clusters.
- Identify users and service accounts with patch permissions.
- Confirm vendor package status against Red Hat, NetApp, or Kubernetes advisories.
- Review API server telemetry for unusual resource saturation.
- Check whether affected clusters are externally reachable or tightly network-restricted.
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.
Container behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-1002100 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
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://groups.google.com/forum/#%21topic/kubernetes-announce/vmUUNkYfG9gCVE reference · x_refsource_CONFIRM
- https://github.com/kubernetes/kubernetes/issues/74534CVE reference · x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20190416-0002/CVE reference · x_refsource_CONFIRM
- RHSA-2019:1851CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:3239CVE reference · vendor-advisory, 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.