Security advisory

{
  "id": "f1f2ec63d6a8f1ebc9f8a206533b4d611e40eb60c50ed7cc736f1b36429bc140",
  "url": "https://osv.dev/vulnerability/CVE-2018-1000221",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1000221",
    "summary": "pkgconf version 1.5.0 to 1.5.2 contains a Buffer Overflow vulnerability in dequote() that can result in dequote() function returns 1-byte allocation if initial length is 0, leading to buffer overflow. This attack appear to be exploitable via specially crafted .pc file. This vulnerability appears to have been fixed in 1.5.3.",
    "evidence": "osv:CVE-2018-1000221",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-1000221",
      "aliases": [
        "CVE-2018-1000221"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pkgconf/pkgconf",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "4735e17287003b24e86b909f473af14771b8b32c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pkgconf:pkgconf:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.5.0"
                      },
                      {
                        "last_affected": "1.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "pkgconf-1.5.2",
            "pkgconf-1.5.1",
            "pkgconf-1.4.2",
            "pkgconf-1.4.1",
            "pkgconf-1.4.0",
            "pkgconf-1.3.90",
            "pkgconf-1.3.7",
            "pkgconf-1.3.6",
            "pkgconf-1.3.5",
            "pkgconf-1.3.4",
            "pkgconf-1.3.3",
            "pkgconf-1.3.2",
            "pkgconf-1.3.1",
            "pkgconf-1.3.0",
            "pkgconf-1.2.0",
            "pkgconf-1.1.0",
            "pkgconf-1.0.1",
            "pkgconf-1",
            "pkgconf-0.9.12",
            "pkgconf-0.9.11",
            "pkgconf-0.9.10",
            "pkgconf-0.9.9",
            "pkgconf-0.9.8",
            "pkgconf-0.9.7",
            "pkgconf-0.9.6",
            "pkgconf-0.9.5",
            "pkgconf-0.9.4",
            "pkgconf-0.9.3",
            "pkgconf-0.9.2",
            "pkgconf-0.9.1",
            "pkgconf-0.9.0",
            "pkgconf-0.8.12",
            "pkgconf-0.8.11",
            "pkgconf-0.8.10",
            "pkgconf-0.8.9",
            "pkgconf-0.8.8",
            "pkgconf-0.8.7",
            "pkgconf-0.8.4",
            "pkgconf-0.8.3",
            "pkgconf-0.8.2",
            "pkgconf-0.8.1",
            "pkgconf-0.8",
            "pkgconf-0.7",
            "pkgconf-0.6",
            "pkgconf-0.5.3",
            "pkgconf-0.5.2",
            "pkgconf-0.5.1",
            "pkgconf-0.5",
            "pkgconf-0.4",
            "pkgconf-0.3",
            "pkgconf-0.2",
            "pkgconf-0.1.1",
            "pkgconf-0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000221.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:23.360427061Z",
      "provider": "osv",
      "references": [
        "https://git.dereferenced.org/pkgconf/pkgconf/pulls/3"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000221",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430902,
  "published_at": "2018-08-20T20:29:01.19+00:00"
}