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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2020-28914

An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-28914
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 11:11 UTC · Revision 1

Source evidence

CVE-2020-28914

core-osv · Original source

Published 17 Nov 2020, 22:15 UTC

An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.

osv:CVE-2020-28914
Complete source record
{
  "id": "f52b851d9598ced910c4e19269ed8f156c49fef2336176a4c5b0a937da51d4e0",
  "url": "https://osv.dev/vulnerability/CVE-2020-28914",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28914",
    "summary": "An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.",
    "evidence": "osv:CVE-2020-28914",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-28914",
      "aliases": [
        "CVE-2020-28914"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kata-containers/kata-containers",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "797b6ad65ddd185bb91bb7faf7dca65fb00ae0b6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:katacontainers:kata-containers:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.11.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.11.4",
            "1.11.3",
            "1.11.2",
            "1.11.1",
            "1.11.0",
            "1.11.0-rc0",
            "1.11.0-alpha1",
            "1.11.0-alpha0",
            "1.9.3",
            "1.10.0-rc0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28914.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/kata-containers/runtime",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "28598666af4ca4855cc81a9bf829efb9e739b962"
                },
                {
                  "fixed": "439d131e706e18018094bca48ae20adfa5d0fb7a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "28598666af4ca4855cc81a9bf829efb9e739b962"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.11.5"
                  },
                  {
                    "range": [
                      {
                        "fixed": "439d131e706e18018094bca48ae20adfa5d0fb7a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.12.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.12.0-rc0",
            "1.11.4",
            "1.12.0-alpha1",
            "1.11.3",
            "1.11.2",
            "1.12.0-alpha0",
            "1.11.1",
            "1.11.0",
            "1.11.0-rc0",
            "1.11.0-alpha1",
            "1.11.0-alpha0",
            "1.10.0-rc0",
            "20191207",
            "1.10.0-alpha1",
            "1.10.0-alpha0",
            "1.9.0-rc0",
            "1.9.0-alpha2",
            "1.9.0-alpha1",
            "1.9.0-alpha0",
            "1.8.0-rc0",
            "1.8.0-alpha2",
            "1.8.0-alpha1",
            "1.8.0-alpha0",
            "1.7.0",
            "1.7.0-rc1",
            "1.7.0-alpha1",
            "1.7.0-alpha0",
            "1.6.0-rc2",
            "1.6.0-rc1",
            "1.5.0",
            "1.5.0-rc2",
            "1.4.0",
            "1.5.0-rc1",
            "1.3.0",
            "1.3.0-rc1",
            "1.3.0-rc0",
            "1.2.0",
            "1.1.0",
            "1.0.0",
            "0.3.0",
            "0.2.0",
            "0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28914.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:10.746711678Z",
      "provider": "osv",
      "references": [
        "https://github.com/kata-containers/kata-containers/pull/1062",
        "https://github.com/kata-containers/runtime/pull/3042",
        "https://github.com/kata-containers/runtime/pull/3051",
        "https://github.com/kata-containers/runtime/releases/tag/1.11.5",
        "https://github.com/kata-containers/runtime/releases/tag/1.12.0"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-28914",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384219,
  "published_at": "2020-11-17T22:15:12.387+00:00"
}