Security advisory

{
  "id": "4eaa3aef1fd555855b08f520fde46fd6e9545649f00624f462889d1ecc502d92",
  "url": "https://osv.dev/vulnerability/CVE-2018-6849",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-6849",
    "summary": "In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.",
    "evidence": "osv:CVE-2018-6849",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-6849",
      "aliases": [
        "CVE-2018-6849"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/duckduckgo/android",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b6aa866a608e59de2ff12b0e9879c16263fa407b"
                },
                {
                  "last_affected": "b6aa866a608e59de2ff12b0e9879c16263fa407b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:duckduckgo:duckduckgo:4.2.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.0"
                      },
                      {
                        "last_affected": "4.2.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6849.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:55.995345022Z",
      "provider": "osv",
      "references": [
        "https://datarift.blogspot.com/p/private-ip-leakage-using-webrtc.html",
        "https://news.ycombinator.com/item?id=16699270",
        "https://voidsec.com/vpn-leak/",
        "https://github.com/rapid7/metasploit-framework/pull/9538",
        "https://www.exploit-db.com/exploits/44403/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:duckduckgo:duckduckgo:4.2.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "duckduckgo:duckduckgo",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.2.0"
                  },
                  {
                    "last_affected": "4.2.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-6849",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438564,
  "published_at": "2018-04-01T18:29:00.227+00:00"
}