{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "20191006"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "20191006"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue",
  "id": "CVE-2019-17263",
  "modified": "2026-03-15T21:48:03.054251052Z",
  "published": "2019-10-06T22:15:10.227Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/libyal/libfwsi/compare/20181227...20191006"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/libyal/libfwsi/issues/13"
    },
    {
      "type": "EVIDENCE",
      "url": "http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}