Security advisory

{
  "id": "d5162b00e8665c9737778801440856947dd8cdbc8d87a0a50207aa22f2a4df66",
  "url": "https://osv.dev/vulnerability/CVE-2021-45429",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-45429",
    "summary": "A Buffer Overflow vulnerablity exists in VirusTotal YARA git commit: 605b2edf07ed8eb9a2c61ba22eb2e7c362f47ba7 via yr_set_configuration in yara/libyara/libyara.c, which could cause a Denial of Service.",
    "evidence": "osv:CVE-2021-45429",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-45429",
      "aliases": [
        "CVE-2021-45429"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/virustotal/yara",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "b99a808cf9955090b909c72d6a0da5295c3cbc7c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:virustotal:yara:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.1.3",
            "v4.1.2",
            "v4.1.1",
            "v4.1.0",
            "v4.1.0-rc2",
            "v4.1.0-rc1",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v4.0.0-rc3",
            "v4.0.0-rc2",
            "v4.0.0-rc1",
            "v3.11.0",
            "v3.10.0-rc1",
            "v3.10.0",
            "v3.9.0",
            "v3.8.1",
            "v3.8.0",
            "v3.7.0",
            "v3.6.0",
            "v3.4.0",
            "v3.3.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.0",
            "v2.1.0",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45429.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:07.801118795Z",
      "provider": "osv",
      "references": [
        "https://github.com/VirusTotal/yara/issues/1616"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-45429",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386936,
  "published_at": "2022-02-04T19:15:08.06+00:00"
}