Security advisory

{
  "id": "2643e380316917a972fa4003f217d4b7d5cb1679c4b84335d204095d8dfdb0a0",
  "url": "https://osv.dev/vulnerability/CVE-2017-1000256",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-1000256",
    "summary": "libvirt version 2.3.0 and later is vulnerable to a bad default configuration of \"verify-peer=no\" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default.",
    "evidence": "osv:CVE-2017-1000256",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-1000256",
      "aliases": [
        "CVE-2017-1000256"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libvirt/libvirt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c3dfe808cf3dca9e27d407a6fbc9ba5f1b8ecbcb"
                },
                {
                  "fixed": "6380fb9795cf921b96e1ad235a0cab78e318299d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.3.0"
                      },
                      {
                        "fixed": "3.9.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.9.0-rc2",
            "v3.9.0-rc1",
            "CVE-2017-1000256",
            "v3.7.0",
            "v3.8.0",
            "v3.8.0-rc1",
            "v3.7.0-rc2",
            "v3.7.0-rc1",
            "v3.6.0",
            "v3.6.0-rc2",
            "v3.6.0-rc1",
            "v3.5.0",
            "v3.5.0-rc2",
            "v3.5.0-rc1",
            "v3.4.0",
            "v3.4.0-rc2",
            "v3.4.0-rc1",
            "v3.3.0",
            "v3.3.0-rc2",
            "v3.3.0-rc1",
            "v3.2.0",
            "v3.2.0-rc2",
            "v3.2.0-rc1",
            "v3.1.0",
            "v3.1.0-rc2",
            "v3.1.0-rc1",
            "CVE-2017-2635",
            "v3.0.0",
            "v3.0.0-rc2",
            "v3.0.0-rc1",
            "v2.5.0",
            "v2.5.0-rc2",
            "v2.5.0-rc1",
            "v2.4.0",
            "v2.4.0-rc2",
            "v2.4.0-rc1",
            "v2.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-1000256.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/libvirt/libvirt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c3dfe808cf3dca9e27d407a6fbc9ba5f1b8ecbcb"
                },
                {
                  "fixed": "6380fb9795cf921b96e1ad235a0cab78e318299d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.3.0"
                      },
                      {
                        "fixed": "3.9.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.9.0-rc2",
            "v3.9.0-rc1",
            "CVE-2017-1000256",
            "v3.7.0",
            "v3.8.0",
            "v3.8.0-rc1",
            "v3.7.0-rc2",
            "v3.7.0-rc1",
            "v3.6.0",
            "v3.6.0-rc2",
            "v3.6.0-rc1",
            "v3.5.0",
            "v3.5.0-rc2",
            "v3.5.0-rc1",
            "v3.4.0",
            "v3.4.0-rc2",
            "v3.4.0-rc1",
            "v3.3.0",
            "v3.3.0-rc2",
            "v3.3.0-rc1",
            "v3.2.0",
            "v3.2.0-rc2",
            "v3.2.0-rc1",
            "v3.1.0",
            "v3.1.0-rc2",
            "v3.1.0-rc1",
            "CVE-2017-2635",
            "v3.0.0",
            "v3.0.0-rc2",
            "v3.0.0-rc1",
            "v2.5.0",
            "v2.5.0-rc2",
            "v2.5.0-rc1",
            "v2.4.0",
            "v2.4.0-rc2",
            "v2.4.0-rc1",
            "v2.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-1000256.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:20.629615104Z",
      "provider": "osv",
      "references": [
        "https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1556251.html",
        "https://access.redhat.com/security/cve/CVE-2017-1000256",
        "https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2017-1000256",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430305,
  "published_at": "2017-10-31T15:29:00.24+00:00"
}