{
  "schema_version": "1.7.0",
  "id": "USN-5446-2",
  "summary": "dpkg vulnerability",
  "details": "USN-5446-1 fixed a vulnerability in dpkg. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n Max Justicz discovered that dpkg incorrectly handled unpacking certain\n source packages. If a user or an automated system were tricked into\n unpacking a specially crafted source package, a remote attacker could\n modify files outside the target unpack directory, leading to a denial of\n service or potentially gaining access to the system.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2022-1664"
  ],
  "related": [],
  "published": "2022-05-30T15:29:17Z",
  "modified": "2026-06-25T10:46:06Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "dpkg",
        "purl": "pkg:deb/ubuntu/dpkg@1.18.4ubuntu1.7+esm1?arch=source&distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.18.4ubuntu1.7+esm1"
            }
          ]
        }
      ],
      "versions": [
        "1.18.2ubuntu5",
        "1.18.3ubuntu1",
        "1.18.4ubuntu1",
        "1.18.4ubuntu1.1",
        "1.18.4ubuntu1.2",
        "1.18.4ubuntu1.3",
        "1.18.4ubuntu1.4",
        "1.18.4ubuntu1.5",
        "1.18.4ubuntu1.6",
        "1.18.4ubuntu1.7"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dpkg",
            "binary_version": "1.18.4ubuntu1.7+esm1"
          },
          {
            "binary_name": "dselect",
            "binary_version": "1.18.4ubuntu1.7+esm1"
          },
          {
            "binary_name": "libdpkg-perl",
            "binary_version": "1.18.4ubuntu1.7+esm1"
          }
        ],
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:Pro:16.04:LTS",
          "cves": [
            {
              "id": "CVE-2022-1664",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5446-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-1664"
    }
  ]
}