Security advisory

{
  "id": "0fc8f795cffa3c613b7d637d141d0cdac61c1bc07c5924837bb136c4d12e2843",
  "url": "https://osv.dev/vulnerability/CVE-2019-15523",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-15523",
    "summary": "An issue was discovered in LINBIT csync2 through 2.0. It does not correctly check for the return value GNUTLS_E_WARNING_ALERT_RECEIVED of the gnutls_handshake() function. It neglects to call this function again, as required by the design of the API.",
    "evidence": "osv:CVE-2019-15523",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-15523",
      "aliases": [
        "CVE-2019-15523"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/linbit/csync2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a8d38ebe1b5ac219a219a7ab2b9e820c6b63b0b2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:linbit:csync2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "csync2-2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-15523.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:45.580720173Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/01/msg00003.html",
        "https://github.com/LINBIT/csync2/pull/13/commits/92742544a56bcbcd9ec99ca15f898b31797e39e2"
      ],
      "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-2019-15523",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382119,
  "published_at": "2020-12-30T21:15:12.533+00:00"
}