Security advisory

{
  "id": "b27e38a680040b723aabaa7ad120626e4345ea71f2784617121f8dc6eabb158d",
  "url": "https://osv.dev/vulnerability/CVE-2021-33191",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33191",
    "summary": "From Apache NiFi MiNiFi C++ version 0.5.0 the c2 protocol implements an \"agent-update\" command which was designed to patch the application binary. This \"patching\" command defaults to calling a trusted binary, but might be modified to an arbitrary value through a \"c2-update\" command. Said command is then executed using the same privileges as the application binary. This was addressed in version 0.10.0",
    "evidence": "osv:CVE-2021-33191",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-33191",
      "aliases": [
        "CVE-2021-33191"
      ],
      "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/apache/nifi-minifi-cpp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5f3b3973e37def4d8ed2753837986d121fd58322"
                },
                {
                  "fixed": "60d5bc70b567fa7c6689f313a75be17fe7c94080"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:nifi_minifi_c\\+\\+:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.5.0"
                      },
                      {
                        "fixed": "0.10.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "minifi-cpp-0.10.0-RC1",
            "rel/minifi-cpp-0.9.0",
            "minifi-cpp-0.9.0-RC2",
            "minifi-cpp-0.9.0-RC1",
            "v0.8.0",
            "0.8.0",
            "rel/minifi-cpp-0.7.0",
            "rel/minifi-cpp-0.6.0",
            "minifi-cpp-0.6.0-RC2",
            "minifi-cpp-0.6.0-RC1",
            "rel/minifi-cpp-0.5.0",
            "minifi-cpp-0.5.0-RC1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33191.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-33191-b4fa8fd1",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "45581895519790946967250934562794875588",
                    "151016016327297584032057121163926636646",
                    "314908982928140470750857460926719267199",
                    "71341333786924621204946705680210143174",
                    "165719634024667977330940939728857333604",
                    "58973793916061874377499866973162585776",
                    "108892000830333068251978432811287265972",
                    "222682067134033337532989291225059412978",
                    "163886782563618303836103696975440619181",
                    "7948864718235082529724167424159538356",
                    "297736869567078051706616618477156666104",
                    "69642665677732161563076330047730367423",
                    "288244144923987386073789665914435222895",
                    "128848792111861270091895155091947350850",
                    "310609493758370830077401134566376271985",
                    "8007616920979349810866771208826984492",
                    "168392778831125291627255422628557502781",
                    "142112813547317268413875778366731100513",
                    "114330525453235516346615848320167322001",
                    "305086334053146969892002765278238048607",
                    "134719923705061201848279200159970325350",
                    "88758680868365217704459493958203591983",
                    "186199130704259739002793895182956688628",
                    "87491922719095050720150518425708046105",
                    "13693550200388959513630470151773926784",
                    "252350572943124561884482201671065231626",
                    "113773837267095747133581535873427460951",
                    "297768142834184905768806633564275138266",
                    "245257710182673518899518098109815329678",
                    "146218506966919159475019630358227722130",
                    "308131536253435157437539162032057064648",
                    "126283221487650246209534056886867358813",
                    "271576129515329509902152319179203951508",
                    "6924368914659256471682406321478732305"
                  ]
                },
                "source": "https://github.com/apache/nifi-minifi-cpp/commit/60d5bc70b567fa7c6689f313a75be17fe7c94080",
                "target": {
                  "file": "extensions/librdkafka/tests/ConsumeKafkaTests.cpp"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-24T14:31:36Z"
          }
        }
      ],
      "modified": "2026-10-24T14:31:36.846097743Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/r6f27a2454f5f67dbe4e21c8eb1db537b01863a0bc3758f28aa60f032%40%3Cannounce.apache.org%3E",
        "https://www.openwall.com/lists/oss-security/2021/08/24/1"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33191",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 443762,
  "published_at": "2021-08-24T12:15:07.307+00:00"
}