Security advisory

{
  "id": "6fa769b1c8e5f082aa3aca59e025ee29db488930202e98d4548ddbcdcf076b7b",
  "url": "https://osv.dev/vulnerability/CVE-2017-17484",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-17484",
    "summary": "The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.",
    "evidence": "osv:CVE-2017-17484",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2017-17484",
      "aliases": [
        "CVE-2017-17484"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/unicode-org/icu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "89bae57bd0570109ca997e8b6b887f851b9c26e0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\\/c\\+\\+:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "60.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-60-1",
            "release-60-rc",
            "milestone-60-0-1",
            "release-59-rc",
            "milestone-59-0-1",
            "last-cvs-commit"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-17484.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:54.267135017Z",
      "provider": "osv",
      "references": [
        "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
        "https://github.com/znc/znc/issues/1459",
        "https://ssl.icu-project.org/trac/changeset/40715",
        "https://ssl.icu-project.org/trac/ticket/13490",
        "https://ssl.icu-project.org/trac/ticket/13510",
        "https://ssl.icu-project.org/trac/changeset/40714",
        "https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-17484",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438115,
  "published_at": "2017-12-10T20:29:00.197+00:00"
}