Vulnerability in Redhat Openshift

CVE-2023-0296

The Birthday attack against 64-bit block ciphers flaw (CVE-2016-2183) was reported for the health checks port (9979) on etcd grpc-proxy component. Even though the CVE-2016-2183 has been fixed in the etcd components, to enable periodic health checks from kubelet, it was necessary to open up a new port (9979) on etcd grpc-proxy, hence this port might be considered as still vulnerable to the same type of vulnerability. The health checks on etcd grpc-proxy do not contain sensitive data (only metrics data), therefore the potential impact related to this vulnerability is minimal. The CVE-2023-0296 has been assigned to this issue to track the permanent fix in the etcd component.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.003 (24.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

  • Redhat Openshift — versions 4.11
  • N/a Red Hat Openshift — versions OpenShift 4.11

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-0296?
CVE-2023-0296 is a medium-severity vulnerability in Redhat Openshift, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.3/10. Published 2023-01-17.
How severe is CVE-2023-0296?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-0296 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.