Security advisory

{
  "id": "61088ed3133dfe776f0f7cf10f8c18ab8cbd8540ec5d63a2e19caf73bccaace5",
  "url": "https://osv.dev/vulnerability/CVE-2019-15161",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-15161",
    "summary": "rpcapd/daemon.c in libpcap before 1.9.1 mishandles certain length values because of reuse of a variable. This may open up an attack vector involving extra data at the end of a request.",
    "evidence": "osv:CVE-2019-15161",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-15161",
      "aliases": [
        "CVE-2019-15161"
      ],
      "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/the-tcpdump-group/libpcap",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d396f255cf7b96a09cf91d0e8cc94d23777d6986"
                },
                {
                  "fixed": "617b12c0339db4891d117b661982126c495439ea"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tcpdump:libpcap:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.9.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "617b12c0339db4891d117b661982126c495439ea"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "libpcap-1.9.0",
            "libpcap-1.9.0rc2",
            "libpcap-1.9-bp",
            "libpcap-1.9.0-rc1",
            "libpcap-1.8.1",
            "libpcap-1.8.0-bp",
            "libpcap-1.7.0-bp",
            "libpcap-0.8-bp",
            "libpcap-0.7.1",
            "libpcap-0.6.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-15161.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-15161-397f5820",
                "digest": {
                  "length": 4017,
                  "function_hash": "196682538824827770604202866058545943170"
                },
                "source": "https://github.com/the-tcpdump-group/libpcap/commit/617b12c0339db4891d117b661982126c495439ea",
                "target": {
                  "file": "rpcapd/daemon.c",
                  "function": "daemon_msg_findallif_req"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-15161-8686ca4b",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "77939256312747897426021864468850046914",
                    "31639149315888361928727419493933373030",
                    "230302035946024568261547428231476124900",
                    "337770322436780444669047104269122231464",
                    "108814901740205276080478249151130962495",
                    "74776204372325553500690040492034190183",
                    "197745948789950147969763295580517814441",
                    "115564426205399301869236696955586650216",
                    "44899186094473439788331895675566550505",
                    "333248649719795680741036517270408847163",
                    "83968890063545290208140539370873203945",
                    "255924912804074091071518284765341886933",
                    "330100098406766952202016283159828515725",
                    "165469642602499849878213198293894508926",
                    "10632567311439597605179350850144820079",
                    "260577463416520206736373669263138004528",
                    "115840443822933993020765046616078771341",
                    "181543324119623997383989035925878345096",
                    "115670294945291092268053261144958436658",
                    "336184969581036824332777365500729035845",
                    "281174766806562442650610605843110252730",
                    "309947102421574928745630622570513450696",
                    "264300053721972123369851750415036675888"
                  ]
                },
                "source": "https://github.com/the-tcpdump-group/libpcap/commit/617b12c0339db4891d117b661982126c495439ea",
                "target": {
                  "file": "rpcapd/daemon.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:40:37Z"
          }
        }
      ],
      "modified": "2026-10-20T13:40:37.424368306Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P5K3DQ4TFSZBDB3XN4CZNJNQ3UIF3D3/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GBIEKWLNIR62KZ5GA7EDXZS52HU6OE5F/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UZTIPUWABYUE5KQOLCKAW65AUUSB7QO6/",
        "https://seclists.org/bugtraq/2019/Dec/23",
        "https://support.apple.com/kb/HT210785",
        "https://support.apple.com/kb/HT210788",
        "https://support.apple.com/kb/HT210789",
        "https://support.apple.com/kb/HT210790",
        "https://www.oracle.com/security-alerts/cpuapr2020.html",
        "https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES",
        "https://www.tcpdump.org/public-cve-list.txt",
        "https://github.com/the-tcpdump-group/libpcap/commit/617b12c0339db4891d117b661982126c495439ea"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-15161",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387945,
  "published_at": "2019-10-03T19:15:09.24+00:00"
}