CVE-2023-2728

Summary

Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the kubernetes.io/enforce-mountable-secrets annotation are used together with ephemeral containers.

Affected Software

Weaknesses

• CWE-20: CWE-20 Improper Input Validation

ADP Enrichment

CVE Program Container

Additional References

• https://groups.google.com/g/kubernetes-security-announce/c/vPWYJ_L84m8
• https://github.com/kubernetes/kubernetes/issues/118640
• http://www.openwall.com/lists/oss-security/2023/07/06/3
• https://security.netapp.com/advisory/ntap-20230803-0004/

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://groups.google.com/g/kubernetes-security-announce/c/vPWYJ_L84m8
• https://github.com/kubernetes/kubernetes/issues/118640
• http://www.openwall.com/lists/oss-security/2023/07/06/3
• https://security.netapp.com/advisory/ntap-20230803-0004/

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