Security advisory

{
  "id": "d98afad88a0cec6f50d82c56f8b125a44f2523206ee00ffb386414fcfba08634",
  "url": "https://osv.dev/vulnerability/CVE-2022-20803",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2022-20803",
    "summary": "A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The vulnerability is due to incorrect use of the realloc function that may result in a double-free. An attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.",
    "evidence": "osv:CVE-2022-20803",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-20803",
      "aliases": [
        "CVE-2022-20803"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cisco-talos/clamav",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ba51bf8e644921a1592d2f3d280a2daa924acfd8"
                },
                {
                  "fixed": "52edc04710856c5b2d29b29edf7a4eea2e6096c3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.104.0"
                      },
                      {
                        "fixed": "0.104.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "clamav-0.104.2",
            "clamav-0.104.1",
            "clamav-0.104.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-20803.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:40.911375948Z",
      "provider": "osv",
      "references": [
        "https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html",
        "https://security.gentoo.org/glsa/202310-01"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2022-20803",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 435044,
  "published_at": "2023-02-17T18:15:11.74+00:00"
}