Security readout for executives and security teams
This Kubernetes flaw lets highly privileged users bypass image restrictions enforced by ImagePolicyWebhook when adding ephemeral containers. It matters mainly in clusters that use ImagePolicyWebhook as an image allow or deny control and allow ephemeral containers. It is not a broad default-cluster issue. Exposure is limited to Kubernetes clusters running affected versions where ImagePolicyWebhook is enabled together with ephemeral containers. Organizations not using ImagePolicyWebhook, not allowing ephemeral containers, or running unaffected versions are less likely to be exposed based on the source bundle. Prioritize this for Kubernetes environments that use ImagePolicyWebhook for image governance. Treat it as moderate urgency: not internet-scale by itself, but meaningful where image policy enforcement is a compliance or containment control. Mitigation focus: Upgrade affected Kubernetes clusters according to Kubernetes vendor guidance.; Review the Kubernetes security announcement before choosing target versions.; Restrict RBAC permissions for ephemeral container operations to trusted operators..
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
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ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupContainer 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-2023-2727 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://groups.google.com/g/kubernetes-security-announce/c/vPWYJ_L84m8CVE reference · mailing-list
- https://github.com/kubernetes/kubernetes/issues/118640CVE reference · issue-tracking
- https://security.netapp.com/advisory/ntap-20230803-0004/CVE reference
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 Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.