{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "11.11"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "12.0"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "12.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "8a212b1d060267671823f562baaea570194770f5"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "11cd727fbd603197cb1e49654fce3352d56f8fd8"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "c9ea47b37813c513e9d5e46bfceaa54f63e8e8bd"
            },
            {
              "fixed": "cd4663dc80323ba64989d0c103d51ad3ee0e9c2f"
            }
          ],
          "repo": "https://github.com/libav/libav",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.",
  "id": "CVE-2017-16803",
  "modified": "2026-03-15T13:47:21.422743295Z",
  "published": "2017-11-13T17:29:00.567Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/bid/101882"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.gentoo.org/glsa/201811-19"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2018/dsa-4119"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.libav.org/show_bug.cgi?id=1098"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2f"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}