ubuntu-cve-2019-19905
Vulnerability from osv_ubuntu
Published
2019-12-19 18:15
Modified
2025-10-24 04:48
Summary
Details

NetHack 3.6.x before 3.6.4 is prone to a buffer overflow vulnerability when reading very long lines from configuration files. This affects systems that have NetHack installed suid/sgid, and shared systems that allow users to upload their own configuration files.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nethack-common",
            "binary_version": "3.6.0-4"
          },
          {
            "binary_name": "nethack-console",
            "binary_version": "3.6.0-4"
          },
          {
            "binary_name": "nethack-lisp",
            "binary_version": "3.6.0-4"
          },
          {
            "binary_name": "nethack-x11",
            "binary_version": "3.6.0-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "nethack",
        "purl": "pkg:deb/ubuntu/nethack@3.6.0-4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nethack-common",
            "binary_version": "3.6.1-1"
          },
          {
            "binary_name": "nethack-console",
            "binary_version": "3.6.1-1"
          },
          {
            "binary_name": "nethack-lisp",
            "binary_version": "3.6.1-1"
          },
          {
            "binary_name": "nethack-x11",
            "binary_version": "3.6.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "nethack",
        "purl": "pkg:deb/ubuntu/nethack@3.6.1-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.1-1"
      ]
    }
  ],
  "aliases": [],
  "details": "NetHack 3.6.x before 3.6.4 is prone to a buffer overflow vulnerability when reading very long lines from configuration files. This affects systems that have NetHack installed suid/sgid, and shared systems that allow users to upload their own configuration files.",
  "id": "UBUNTU-CVE-2019-19905",
  "modified": "2025-10-24T04:48:07Z",
  "published": "2019-12-19T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-19905"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/NetHack/NetHack/commit/f4a840a48f4bcf11757b3d859e9d53cc9d5ef226"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/NetHack/NetHack/commit/f001de79542b8c38b1f8e6d7eaefbbd28ab94b47"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.debian.org/947005"
    },
    {
      "type": "REPORT",
      "url": "https://nethack.org/security/CVE-2019-19905.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-19905"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-19905"
  ]
}



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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.


Detection rules are retrieved from Rulezet.