Security advisory

{
  "id": "f891496c9e8ffc1aeb834790fe0d4ebb693cdcb4989fb92f631f4abcd2b90d9b",
  "url": "https://osv.dev/vulnerability/CVE-2020-5213",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-5213",
    "summary": "In NetHack before 3.6.5, too long of a value for the SYMBOL configuration file option can cause a buffer overflow resulting in a crash or remote code execution/privilege escalation. This vulnerability affects systems that have NetHack installed suid/sgid and shared systems that allow users to upload their own configuration files. Users should upgrade to NetHack 3.6.5.",
    "evidence": "osv:CVE-2020-5213",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-5213",
      "aliases": [
        "CVE-2020-5213",
        "GHSA-rr25-4v34-pr7v"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nethack/nethack",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "514682730773318f68d5b28b0428cfe333f92fe0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nethack:nethack:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "NetHack-3.6.4_Released",
            "NetHack-3.6.3_Released",
            "NetHack-3.6.3.beta1.2019.11.17",
            "NetHack-3.6.3.wip.2019.10.30",
            "v3.6.3.wip.2019.10.29",
            "NetHack-3.6.3.wip.2019.10.29",
            "v3.6.3.757eca7",
            "NetHack-3.6.3_WIP",
            "NetHack-3.6.2_Released",
            "NetHack-3.6.2_Release",
            "NetHack-3.6.1_Release",
            "NetHack-3.6.1_RC01",
            "NetHack-3.6.0_Release",
            "NetHack-3.6.0_RC05",
            "NetHack-3.6.0_RC04",
            "NetHack-3.6.0_RC03",
            "NetHack-3.6.0_RC02",
            "NetHack-3.6.0_RC01",
            "MOVE2GIT"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5213.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:28.331102877Z",
      "provider": "osv",
      "references": [
        "https://github.com/NetHack/NetHack/security/advisories/GHSA-rr25-4v34-pr7v"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-5213",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384338,
  "published_at": "2020-01-28T18:15:11.4+00:00"
}