vuln-ubuntu/data/osv/usn/USN-5325-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-5325-1",
  "summary": "zsh vulnerabilities",
  "details": "Sam Foxman discovered that Zsh incorrectly handled certain inputs.\nAn attacker could possibly use this issue to regain dropped privileges.\n(CVE-2019-20044)\n\nIt was discovered that Zsh incorrectly handled certain inputs.\nAn attacker could possibly use this issue to execute arbitrary code.\n(CVE-2021-45444)\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2019-20044",
    "UBUNTU-CVE-2021-45444"
  ],
  "related": [],
  "published": "2022-03-14T17:30:22Z",
  "modified": "2026-06-25T10:46:04Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "zsh",
        "purl": "pkg:deb/ubuntu/zsh@5.1.1-1ubuntu2.3+esm1?arch=source&distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.1-1ubuntu2.3+esm1"
            }
          ]
        }
      ],
      "versions": [
        "5.1.1-1ubuntu1",
        "5.1.1-1ubuntu2",
        "5.1.1-1ubuntu2.1",
        "5.1.1-1ubuntu2.2",
        "5.1.1-1ubuntu2.3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "zsh",
            "binary_version": "5.1.1-1ubuntu2.3+esm1"
          },
          {
            "binary_name": "zsh-common",
            "binary_version": "5.1.1-1ubuntu2.3+esm1"
          },
          {
            "binary_name": "zsh-static",
            "binary_version": "5.1.1-1ubuntu2.3+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-2019-20044",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            },
            {
              "id": "CVE-2021-45444",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "zsh",
        "purl": "pkg:deb/ubuntu/zsh@5.4.2-3ubuntu3.2?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.2-3ubuntu3.2"
            }
          ]
        }
      ],
      "versions": [
        "5.2-5ubuntu1",
        "5.4.2-3ubuntu1",
        "5.4.2-3ubuntu2",
        "5.4.2-3ubuntu3",
        "5.4.2-3ubuntu3.1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "zsh",
            "binary_version": "5.4.2-3ubuntu3.2"
          },
          {
            "binary_name": "zsh-common",
            "binary_version": "5.4.2-3ubuntu3.2"
          },
          {
            "binary_name": "zsh-static",
            "binary_version": "5.4.2-3ubuntu3.2"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2019-20044",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            },
            {
              "id": "CVE-2021-45444",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "zsh",
        "purl": "pkg:deb/ubuntu/zsh@5.8-3ubuntu1.1?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.8-3ubuntu1.1"
            }
          ]
        }
      ],
      "versions": [
        "5.7.1-1ubuntu2",
        "5.8-2ubuntu2",
        "5.8-3ubuntu1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "zsh",
            "binary_version": "5.8-3ubuntu1.1"
          },
          {
            "binary_name": "zsh-common",
            "binary_version": "5.8-3ubuntu1.1"
          },
          {
            "binary_name": "zsh-static",
            "binary_version": "5.8-3ubuntu1.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-45444",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "low"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5325-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-20044"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-45444"
    }
  ]
}