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kubernetes — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2023-2431

A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement. Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode. This bug affects Kubelet.

Products
kubernetes
Affected versions
Not specified
Fixed versions
1.20.5+really1.20.2-1
CVEs
CVE-2023-2431
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 15:45 UTC · Revision 1

Source evidence

DEBIAN-CVE-2023-2431

core-osv · Original source

Published 16 Jun 2023, 08:15 UTC

A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement. Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode. This bug affects Kubelet.

osv:DEBIAN-CVE-2023-2431

kubernetes

Fixed versions: 1.20.5+really1.20.2-1

kubernetes

Fixed versions: 1.20.5+really1.20.2-1

kubernetes

Fixed versions: 1.20.5+really1.20.2-1

Complete source record
{
  "id": "7ce58f64ab97ea6ae4d3a89a5a9fc1111d5cf6c59f3bf5e1f8be894c66a24ff1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-2431",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2023-2431",
    "summary": "A security issue was discovered in Kubelet that allows pods to bypass the seccomp profile enforcement. Pods that use localhost type for seccomp profile but specify an empty profile field, are affected by this issue. In this scenario, this vulnerability allows the pod to run in unconfined (seccomp disabled) mode. This bug affects Kubelet.",
    "evidence": "osv:DEBIAN-CVE-2023-2431",
    "products": [
      {
        "name": {
          "value": "kubernetes",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.20.5+really1.20.2-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "kubernetes",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.20.5+really1.20.2-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "kubernetes",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.20.5+really1.20.2-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2023-2431",
      "aliases": [
        "DEBIAN-CVE-2023-2431"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.20.5+really1.20.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "kubernetes",
            "purl": "pkg:deb/debian/kubernetes?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2431.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.20.5+really1.20.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "kubernetes",
            "purl": "pkg:deb/debian/kubernetes?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2431.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.20.5+really1.20.2-1"
                }
              ]
            }
          ],
          "package": {
            "name": "kubernetes",
            "purl": "pkg:deb/debian/kubernetes?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2431.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T18:01:36.936018702Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-2431"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2023-2431"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-2431",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 455600,
  "published_at": "2023-06-16T08:15:08.77+00:00"
}