{
  "document": {
    "aggregate_severity": {
      "text": "Low"
    },
    "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/2021/cve-2021-36368-els_os-debian10els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-04-24T14:56:06Z",
      "generator": {
        "date": "2026-04-24T14:56:06Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2021-36368-ELS_OS-DEBIAN10ELS",
      "initial_release_date": "2021-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-04-24T14:56:06Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2021-36368"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian None",
                "product": {
                  "name": "Debian None",
                  "product_id": "Debian-10",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
                "product": {
                  "name": "openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
                  "product_id": "openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/openssh-sftp-server@7.9p1-10%2Bdeb10u4?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-client-1:7.9p1-10+deb10u4.amd64",
                "product": {
                  "name": "openssh-client-1:7.9p1-10+deb10u4.amd64",
                  "product_id": "openssh-client-1:7.9p1-10+deb10u4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/openssh-client@7.9p1-10%2Bdeb10u4?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-tests-1:7.9p1-10+deb10u4.amd64",
                "product": {
                  "name": "openssh-tests-1:7.9p1-10+deb10u4.amd64",
                  "product_id": "openssh-tests-1:7.9p1-10+deb10u4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/openssh-tests@7.9p1-10%2Bdeb10u4?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64",
                "product": {
                  "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64",
                  "product_id": "ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/ssh-askpass-gnome@7.9p1-10%2Bdeb10u4?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-server-1:7.9p1-10+deb10u4.amd64",
                "product": {
                  "name": "openssh-server-1:7.9p1-10+deb10u4.amd64",
                  "product_id": "openssh-server-1:7.9p1-10+deb10u4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/openssh-server@7.9p1-10%2Bdeb10u4?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "ssh-1:7.9p1-10+deb10u4.all",
                "product": {
                  "name": "ssh-1:7.9p1-10+deb10u4.all",
                  "product_id": "ssh-1:7.9p1-10+deb10u4.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/debian/ssh@7.9p1-10%2Bdeb10u4?arch=all"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                "product": {
                  "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_id": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-sftp-server@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                "product": {
                  "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_id": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-sftp-server@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                "product": {
                  "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_id": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-client@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                "product": {
                  "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_id": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-client@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                "product": {
                  "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_id": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-tests@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                "product": {
                  "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_id": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-tests@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                "product": {
                  "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_id": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/ssh-askpass-gnome@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                "product": {
                  "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_id": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/ssh-askpass-gnome@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                "product": {
                  "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_id": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-server@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                "product": {
                  "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_id": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/openssh-server@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
                "product": {
                  "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
                  "product_id": "ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/ssh@7.9p1-10%2Bdeb10u4%2Btuxcare.els1?arch=all"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
                "product": {
                  "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
                  "product_id": "ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/ssh@7.9p1-10%2Bdeb10u4%2Btuxcare.els2?arch=all"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64"
        },
        "product_reference": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-sftp-server-1:7.9p1-10+deb10u4.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4.amd64"
        },
        "product_reference": "openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64"
        },
        "product_reference": "openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64"
        },
        "product_reference": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-client-1:7.9p1-10+deb10u4.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-client-1:7.9p1-10+deb10u4.amd64"
        },
        "product_reference": "openssh-client-1:7.9p1-10+deb10u4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64"
        },
        "product_reference": "openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64"
        },
        "product_reference": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-tests-1:7.9p1-10+deb10u4.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-tests-1:7.9p1-10+deb10u4.amd64"
        },
        "product_reference": "openssh-tests-1:7.9p1-10+deb10u4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64"
        },
        "product_reference": "openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64 as a component of Debian None",
          "product_id": "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64"
        },
        "product_reference": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64 as a component of Debian None",
          "product_id": "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64"
        },
        "product_reference": "ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64 as a component of Debian None",
          "product_id": "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64"
        },
        "product_reference": "ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64"
        },
        "product_reference": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-server-1:7.9p1-10+deb10u4.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-server-1:7.9p1-10+deb10u4.amd64"
        },
        "product_reference": "openssh-server-1:7.9p1-10+deb10u4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64 as a component of Debian None",
          "product_id": "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64"
        },
        "product_reference": "openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all as a component of Debian None",
          "product_id": "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all"
        },
        "product_reference": "ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-1:7.9p1-10+deb10u4.all as a component of Debian None",
          "product_id": "Debian-10:ssh-1:7.9p1-10+deb10u4.all"
        },
        "product_reference": "ssh-1:7.9p1-10+deb10u4.all",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all as a component of Debian None",
          "product_id": "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all"
        },
        "product_reference": "ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
        "relates_to_product_reference": "Debian-10"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-36368",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "notes": [
        {
          "category": "description",
          "text": "An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is \"this is not an authentication bypass, since nothing is being bypassed.",
          "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"
        }
      ],
      "product_status": {
        "known_affected": [
          "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
          "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
          "Debian-10:openssh-client-1:7.9p1-10+deb10u4.amd64",
          "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
          "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
          "Debian-10:openssh-server-1:7.9p1-10+deb10u4.amd64",
          "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
          "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
          "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
          "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
          "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
          "Debian-10:openssh-tests-1:7.9p1-10+deb10u4.amd64",
          "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
          "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
          "Debian-10:ssh-1:7.9p1-10+deb10u4.all",
          "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
          "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
          "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-36368"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.mindrot.org/show_bug.cgi?id=3316",
          "url": "https://bugzilla.mindrot.org/show_bug.cgi?id=3316"
        },
        {
          "category": "external",
          "summary": "https://docs.ssh-mitm.at/trivialauth.html",
          "url": "https://docs.ssh-mitm.at/trivialauth.html"
        },
        {
          "category": "external",
          "summary": "https://github.com/openssh/openssh-portable/pull/258",
          "url": "https://github.com/openssh/openssh-portable/pull/258"
        },
        {
          "category": "external",
          "summary": "https://security-tracker.debian.org/tracker/CVE-2021-36368",
          "url": "https://security-tracker.debian.org/tracker/CVE-2021-36368"
        },
        {
          "category": "external",
          "summary": "https://www.openssh.com/security.html",
          "url": "https://www.openssh.com/security.html"
        }
      ],
      "release_date": "2022-03-13T00:15:00Z",
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "This is a disputed, low-severity OpenSSH <8.9 issue that does not bypass authentication and only arises when a client has explicitly enabled agent forwarding (a non-default setting) and uses FIDO-protected keys without verbose logging. Exploitation further requires the user to connect to an attacker-controlled server intentionally modified to offer the non-standard “none” authentication method, making the scenario high-complexity and environment-specific. With no integrity or availability impact and only limited confidentiality risk via potential misuse of a deliberately forwarded agent, it can be safely deprioritized in managed enterprise VM/server contexts.",
          "product_ids": [
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
            "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
            "Debian-10:ssh-1:7.9p1-10+deb10u4.all",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "HIGH",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-client-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-server-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-sftp-server-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:openssh-tests-1:7.9p1-10+deb10u4.amd64",
            "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els1.all",
            "Debian-10:ssh-1:7.9p1-10+deb10u4+tuxcare.els2.all",
            "Debian-10:ssh-1:7.9p1-10+deb10u4.all",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els1.amd64",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4+tuxcare.els2.amd64",
            "Debian-10:ssh-askpass-gnome-1:7.9p1-10+deb10u4.amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ]
    }
  ]
}