Security advisory

{
  "id": "7b87c17f2b57c9b53cee0a6c421782393bf2b59dcfc7aadacdee2a2faaff84ba",
  "url": "https://osv.dev/vulnerability/CVE-2018-6535",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-6535",
    "summary": "An issue was discovered in Icinga 2.x through 2.8.1. The lack of a constant-time password comparison function can disclose the password to an attacker.",
    "evidence": "osv:CVE-2018-6535",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-6535",
      "aliases": [
        "CVE-2018-6535"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/icinga/icinga2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "30384a4340011723869969e76a3dd2801786cf2e"
                },
                {
                  "last_affected": "be102d9d4e4de7ed657f7272f635e9aadf3e162e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.8.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.8.1",
            "v2.7.0",
            "v2.6.1",
            "v2.6.0",
            "v2.5.0",
            "v2.4.0",
            "v2.3.0",
            "v2.2.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6535.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/icinga/icingaweb2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ee1ee5af84d32c4493365959aa8a4322a34582e4"
                },
                {
                  "last_affected": "233bd29e4104125b4e5ef631e8c16dde33dadd9a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.8.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.8.1",
            "v2.8.0",
            "v2.8.0-rc1",
            "v2.7.1",
            "v2.7.0",
            "v2.6.2",
            "v2.6.1",
            "v2.6.0",
            "v2.5.3",
            "v2.5.2",
            "v2.5.1",
            "v2.5.0",
            "v2.4.0-2",
            "v2.4.0",
            "v2.3.4",
            "v2.3.3",
            "v2.3.2",
            "v2.2.0",
            "v2.1.2",
            "v2.3.1",
            "v2.3.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6535.json"
          }
        }
      ],
      "modified": "2026-10-24T10:48:42.908740246Z",
      "provider": "osv",
      "references": [
        "https://github.com/Icinga/icinga2/issues/4920",
        "https://github.com/Icinga/icinga2/pull/5715"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "icinga:icinga",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "2.0.0"
                  },
                  {
                    "last_affected": "2.8.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-6535",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441627,
  "published_at": "2018-02-27T19:29:00.543+00:00"
}