{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian10els/vex/2020/cve-2020-20813-els_os-debian10els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-06-12T23:04:32Z",
      "generator": {
        "date": "2026-06-12T23:04:32Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2020-20813-ELS_OS-DEBIAN10ELS",
      "initial_release_date": "2020-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2020-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-11-29T10:48:09Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-12-23T22:15:38Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-06-12T23:04:32Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2020-20813"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian 10",
                "product": {
                  "name": "Debian 10",
                  "product_id": "Debian-10",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64",
                "product": {
                  "name": "openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64",
                  "product_id": "openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openvpn@2.4.7-1%2Bdeb10u1%2Btuxcare.els1?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64"
        },
        "product_reference": "openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-20813",
      "notes": [
        {
          "category": "description",
          "text": "Control Channel in OpenVPN 2.4.7 and earlier allows remote attackers to cause a denial of service via crafted reset packet.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "Debian-10:openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2020-20813"
        },
        {
          "category": "external",
          "summary": "https://www.freebuf.com/vuls/215171.html",
          "url": "https://www.freebuf.com/vuls/215171.html"
        }
      ],
      "release_date": "2023-08-22T19:16:00Z",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Debian-10:openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "date": "2026-06-12T13:03:44.326816Z",
          "details": "Not affected. This CVE is not a validated OpenVPN core issue: upstream did not issue it, Debian classifies it as unactionable, and Ubuntu marks it ignored after confirming with upstream. The only acknowledged, related behavior is CVE‑2021‑4234 in OpenVPN Access Server 2.10 and earlier—a different product from the open‑source OpenVPN package used on standard Linux servers/VMs—so there is no applicable vulnerable code path here.",
          "product_ids": [
            "Debian-10:openvpn-0:2.4.7-1+deb10u1+tuxcare.els1.amd64"
          ]
        }
      ]
    }
  ]
}