Security advisory

{
  "id": "d34b4b1329a5d1eb549f88188de3632af25ae355b129c09854fc5629aa81cd78",
  "url": "https://osv.dev/vulnerability/CVE-2020-15474",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-15474",
    "summary": "In nDPI through 3.2, there is a stack overflow in extractRDNSequence in lib/protocols/tls.c.",
    "evidence": "osv:CVE-2020-15474",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-15474",
      "aliases": [
        "CVE-2020-15474"
      ],
      "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/ntop/ndpi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a50169a7b3ec36c8d789191b014715126e820698"
                },
                {
                  "fixed": "23594f036536468072198a57c59b6e9d63caf6ce"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ntop:ndpi:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "23594f036536468072198a57c59b6e9d63caf6ce"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.2",
            "1.8",
            "1.7",
            "1.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15474.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-15474-3ad1d282",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "225523574745366093670176219419875372882",
                    "41533100937668737138175229749319945716",
                    "324319294165182271277299970328597868925",
                    "134250359078680813902806761101273532615",
                    "189336477499206106497022578611438464827",
                    "117131308882442004379109698369237697599",
                    "23650724858322295196222395239047867090"
                  ]
                },
                "source": "https://github.com/ntop/ndpi/commit/23594f036536468072198a57c59b6e9d63caf6ce",
                "target": {
                  "file": "src/lib/protocols/tls.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-15474-e83d55f3",
                "digest": {
                  "length": 8094,
                  "function_hash": "225965552290219495327635591115184837436"
                },
                "source": "https://github.com/ntop/ndpi/commit/23594f036536468072198a57c59b6e9d63caf6ce",
                "target": {
                  "file": "src/lib/protocols/tls.c",
                  "function": "processCertificateElements"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-15474-ee464892",
                "digest": {
                  "length": 767,
                  "function_hash": "269860222721792341979458144334976344"
                },
                "source": "https://github.com/ntop/ndpi/commit/23594f036536468072198a57c59b6e9d63caf6ce",
                "target": {
                  "file": "src/lib/protocols/tls.c",
                  "function": "extractRDNSequence"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:52:29Z"
          }
        }
      ],
      "modified": "2026-10-20T13:52:29.876671288Z",
      "provider": "osv",
      "references": [
        "https://github.com/ntop/nDPI/commit/23594f036536468072198a57c59b6e9d63caf6ce"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-15474",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388323,
  "published_at": "2020-07-01T11:15:11.27+00:00"
}