Security readout for executives and security teams
Plain-English summary
This flaw affects OpenShift Enterprise environments using the OpenShift Elasticsearch plugin. If Elasticsearch is exposed through an external route, someone who knows the authentication name may later access indexed data without the token. The known impact is limited confidentiality and integrity risk for Elasticsearch indices, not full cluster takeover.
Executive priority
Treat this as a targeted legacy-platform exposure issue. Prioritize environments where Elasticsearch was externally routed, because those deployments have the clearest path to data exposure or index tampering.
Technical view
CVE-2017-12195 is a CWE-287 authentication bypass in the OpenShift Elasticsearch plugin. The CVSS 3.0 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. Exploitation requires an external Elasticsearch route and knowledge of the authentication name; access is described as limited to indices.
Likely exposure
Exposure is most likely in legacy Red Hat OpenShift Enterprise deployments using the OpenShift Elasticsearch plugin with Elasticsearch configured on an external route.
Exploitation context
The bundle does not show active exploitation and CISA KEV is false. The issue is network-reachable and low complexity by CVSS, but depends on a specific external-route configuration and knowledge of the authentication name.
Researcher notes
Affected scope in the bundle is broad, but conditional: OpenShift Enterprise versions using the plugin and an external Elasticsearch route. The sources do not provide exploit evidence, detailed patch contents, or broader product impact beyond Red Hat OpenShift.
Mitigation direction
- Review and apply Red Hat guidance in RHSA-2017:3188 and RHSA-2017:3389.
- Inventory OpenShift Enterprise clusters using the OpenShift Elasticsearch plugin.
- Remove unnecessary external Elasticsearch routes where business use does not require them.
- Restrict Elasticsearch route access while vendor remediation status is confirmed.
- Monitor Elasticsearch index access for unexpected tokenless or unauthenticated activity.
Validation and detection
- Confirm whether the OpenShift Elasticsearch plugin is present in each OpenShift Enterprise environment.
- Check whether Elasticsearch is configured with any external route.
- Verify relevant Red Hat advisories are applied or otherwise addressed.
- Confirm controlled tokenless access attempts are rejected after remediation.
- Review index access logs for unexpected access during the exposure window.
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-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-12195 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:N/UI:N/S:U/C:L/I:L/A:N
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:N/UI:N/S:U/C:L/I:L/A:N3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2017:3188CVE reference · vendor-advisory, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12195CVE reference · x_refsource_CONFIRM
- RHSA-2017:3389CVE 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.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.