ghsa-6qfg-8799-r575
Vulnerability from github
Published
2021-05-18 15:30
Modified
2023-09-18 20:30
Severity ?
5.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Summary
Kubernetes kubectl cp Vulnerable to Symlink Attack
Details

The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "k8s.io/kubernetes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.13.10"
            },
            {
              "fixed": "1.13.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "k8s.io/kubernetes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.14.6"
            },
            {
              "fixed": "1.14.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "k8s.io/kubernetes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.15.3"
            },
            {
              "fixed": "1.16.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-11251"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59",
      "CWE-61"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-17T21:58:06Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.",
  "id": "GHSA-6qfg-8799-r575",
  "modified": "2023-09-18T20:30:39Z",
  "published": "2021-05-18T15:30:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11251"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/issues/87773"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kubernetes/kubernetes/pull/82143"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/d/msg/kubernetes-announce/YYtEFdFimZ4/nZnOezZuBgAJ"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Kubernetes kubectl cp Vulnerable to Symlink Attack"
}


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