usn-4686-1
Vulnerability from osv_ubuntu
Published
2021-01-07 14:10
Modified
2026-04-27 14:11
Summary
ghostscript vulnerabilities
Details

It was discovered that Ghostscript incorrectly handled certain image files. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could use this issue to cause Ghostscript to crash, resulting in a denial of service, or possibly execute arbitrary code.


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-5727",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6851",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-8112",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27814",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27824",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27841",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27842",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27843",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27845",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ghostscript",
            "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.14"
          },
          {
            "binary_name": "ghostscript-x",
            "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.14"
          },
          {
            "binary_name": "libgs9",
            "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.14"
          },
          {
            "binary_name": "libgs9-common",
            "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ghostscript",
        "purl": "pkg:deb/ubuntu/ghostscript@9.26~dfsg+0-0ubuntu0.16.04.14?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.26~dfsg+0-0ubuntu0.16.04.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.16~dfsg~0-0ubuntu3",
        "9.16~dfsg~0-0ubuntu4",
        "9.18~dfsg~0-0ubuntu1",
        "9.18~dfsg~0-0ubuntu2",
        "9.18~dfsg~0-0ubuntu2.2",
        "9.18~dfsg~0-0ubuntu2.3",
        "9.18~dfsg~0-0ubuntu2.4",
        "9.18~dfsg~0-0ubuntu2.6",
        "9.18~dfsg~0-0ubuntu2.7",
        "9.18~dfsg~0-0ubuntu2.8",
        "9.18~dfsg~0-0ubuntu2.9",
        "9.25~dfsg+1-0ubuntu0.16.04.1",
        "9.25~dfsg+1-0ubuntu0.16.04.2",
        "9.25~dfsg+1-0ubuntu0.16.04.3",
        "9.26~dfsg+0-0ubuntu0.16.04.1",
        "9.26~dfsg+0-0ubuntu0.16.04.3",
        "9.26~dfsg+0-0ubuntu0.16.04.4",
        "9.26~dfsg+0-0ubuntu0.16.04.5",
        "9.26~dfsg+0-0ubuntu0.16.04.6",
        "9.26~dfsg+0-0ubuntu0.16.04.7",
        "9.26~dfsg+0-0ubuntu0.16.04.8",
        "9.26~dfsg+0-0ubuntu0.16.04.9",
        "9.26~dfsg+0-0ubuntu0.16.04.10",
        "9.26~dfsg+0-0ubuntu0.16.04.11",
        "9.26~dfsg+0-0ubuntu0.16.04.12",
        "9.26~dfsg+0-0ubuntu0.16.04.13"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2018-5727",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-6851",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-8112",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27814",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27824",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27841",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27842",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27843",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27845",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ghostscript",
            "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.14"
          },
          {
            "binary_name": "ghostscript-x",
            "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.14"
          },
          {
            "binary_name": "libgs9",
            "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.14"
          },
          {
            "binary_name": "libgs9-common",
            "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "ghostscript",
        "purl": "pkg:deb/ubuntu/ghostscript@9.26~dfsg+0-0ubuntu0.18.04.14?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.26~dfsg+0-0ubuntu0.18.04.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.21~dfsg+1-0ubuntu3",
        "9.22~dfsg+1-0ubuntu1",
        "9.22~dfsg+1-0ubuntu1.1",
        "9.22~dfsg+1-0ubuntu1.2",
        "9.25~dfsg+1-0ubuntu0.18.04.1",
        "9.25~dfsg+1-0ubuntu0.18.04.2",
        "9.26~dfsg+0-0ubuntu0.18.04.1",
        "9.26~dfsg+0-0ubuntu0.18.04.3",
        "9.26~dfsg+0-0ubuntu0.18.04.4",
        "9.26~dfsg+0-0ubuntu0.18.04.5",
        "9.26~dfsg+0-0ubuntu0.18.04.6",
        "9.26~dfsg+0-0ubuntu0.18.04.7",
        "9.26~dfsg+0-0ubuntu0.18.04.8",
        "9.26~dfsg+0-0ubuntu0.18.04.9",
        "9.26~dfsg+0-0ubuntu0.18.04.10",
        "9.26~dfsg+0-0ubuntu0.18.04.11",
        "9.26~dfsg+0-0ubuntu0.18.04.12",
        "9.26~dfsg+0-0ubuntu0.18.04.13"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Ghostscript incorrectly handled certain image\nfiles. If a user or automated system were tricked into processing a\nspecially crafted file, a remote attacker could use this issue to cause\nGhostscript to crash, resulting in a denial of service, or possibly\nexecute arbitrary code.\n",
  "id": "USN-4686-1",
  "modified": "2026-04-27T14:11:26Z",
  "published": "2021-01-07T14:10:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4686-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5727"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6851"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8112"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27814"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27824"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27841"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27842"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27843"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27845"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "ghostscript vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-5727",
    "UBUNTU-CVE-2020-6851",
    "UBUNTU-CVE-2020-8112",
    "UBUNTU-CVE-2020-27814",
    "UBUNTU-CVE-2020-27824",
    "UBUNTU-CVE-2020-27841",
    "UBUNTU-CVE-2020-27842",
    "UBUNTU-CVE-2020-27843",
    "UBUNTU-CVE-2020-27845"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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