{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2018-10896 The default cloud-init configuration in cloud-init 0.6.2 and newer included \"ssh_deletekeys: 0\" disabling cloud-init\u0027s deletion of ssh host keys. In some environments this could lead to instances created by cloning a golden master or template system sharing ssh host keys and being able to impersonate one another or conduct man-in-the-middle attacks. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2018/msrc_cve-2018-10896.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "The default cloud-init configuration in cloud-init 0.6.2 and newer included \"ssh_deletekeys: 0\" disabling cloud-init\u0027s deletion of ssh host keys. In some environments this could lead to instances created by cloning a golden master or template system sharing ssh host keys and being able to impersonate one another or conduct man-in-the-middle attacks.",
    "tracking": {
      "current_release_date": "2020-08-18T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T17:20:47.357Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2018-10896",
      "initial_release_date": "2018-08-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2020-08-18T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 cloud-init 21.3-3",
                "product": {
                  "name": "\u003ccm1 cloud-init 21.3-3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 cloud-init 21.3-3",
                "product": {
                  "name": "cm1 cloud-init 21.3-3",
                  "product_id": "16934"
                }
              }
            ],
            "category": "product_name",
            "name": "cloud-init"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 cloud-init 21.3-3 as a component of CBL Mariner 1.0",
          "product_id": "16820-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "16820"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cm1 cloud-init 21.3-3 as a component of CBL Mariner 1.0",
          "product_id": "16934-16820"
        },
        "product_reference": "16934",
        "relates_to_product_reference": "16820"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-10896",
      "cwe": {
        "id": "CWE-321",
        "name": "Use of Hard-coded Cryptographic Key"
      },
      "notes": [
        {
          "category": "general",
          "text": "redhat",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "16934-16820"
        ],
        "known_affected": [
          "16820-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2018-10896 The default cloud-init configuration in cloud-init 0.6.2 and newer included \"ssh_deletekeys: 0\" disabling cloud-init\u0027s deletion of ssh host keys. In some environments this could lead to instances created by cloning a golden master or template system sharing ssh host keys and being able to impersonate one another or conduct man-in-the-middle attacks. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2018/msrc_cve-2018-10896.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-08-18T00:00:00.000Z",
          "details": "21.3-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 7.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "16820-1"
          ]
        }
      ],
      "title": "The default cloud-init configuration in cloud-init 0.6.2 and newer included \"ssh_deletekeys: 0\" disabling cloud-init\u0027s deletion of ssh host keys. In some environments this could lead to instances created by cloning a golden master or template system sharing ssh host keys and being able to impersonate one another or conduct man-in-the-middle attacks."
    }
  ]
}