Security advisory

{
  "id": "75d1bb95106e9d874953bc780b859b77185fa8a255f02abd62ddc8cbe4029b3c",
  "url": "https://osv.dev/vulnerability/CVE-2019-15522",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-15522",
    "summary": "An issue was discovered in LINBIT csync2 through 2.0. csync_daemon_session in daemon.c neglects to force a failure of a hello command when the configuration requires use of SSL.",
    "evidence": "osv:CVE-2019-15522",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-15522",
      "aliases": [
        "CVE-2019-15522"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/linbit/csync2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a8d38ebe1b5ac219a219a7ab2b9e820c6b63b0b2"
                },
                {
                  "fixed": "416f1de878ef97e27e27508914f7ba8599a0be22"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:linbit:csync2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "416f1de878ef97e27e27508914f7ba8599a0be22"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "csync2-2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-15522.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-15522-2f4c39b7",
                "digest": {
                  "length": 7825,
                  "function_hash": "255400942276427280257923089608729954212"
                },
                "source": "https://github.com/linbit/csync2/commit/416f1de878ef97e27e27508914f7ba8599a0be22",
                "target": {
                  "file": "daemon.c",
                  "function": "csync_daemon_session"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-15522-54ae9f92",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "25965680142025192874023044997460010102",
                    "47332741921033549829969510782903120198",
                    "50261823447827306386841951938826890569",
                    "333321465951084331766574043476415129405"
                  ]
                },
                "source": "https://github.com/linbit/csync2/commit/416f1de878ef97e27e27508914f7ba8599a0be22",
                "target": {
                  "file": "daemon.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:56:37Z"
          }
        }
      ],
      "modified": "2026-10-20T13:56:37.210111746Z",
      "provider": "osv",
      "references": [
        "https://github.com/LINBIT/csync2/commit/416f1de878ef97e27e27508914f7ba8599a0be22"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-15522",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388426,
  "published_at": "2020-03-20T21:15:15.313+00:00"
}