Security advisory

{
  "id": "e25a21e588c42f686992a459aab344168f5aa6b8716e3cfaee78ce2935e43ba8",
  "url": "https://osv.dev/vulnerability/CVE-2023-29421",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-29421",
    "summary": "An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.",
    "evidence": "osv:CVE-2023-29421",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-29421",
      "aliases": [
        "CVE-2023-29421"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/iczelia/bzip3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3bf1483853b7d3371b4a6beb186cbddcaf45d25e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3"
                      },
                      {
                        "fixed": "1.2.3"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "cpe": "cpe:2.3:a:bzip3_project:bzip3:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.8",
            "1.1.7",
            "1.1.6",
            "1.1.5",
            "1.1.4",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.1",
            "1.0.0",
            "corpus"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-29421.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.490906195Z",
      "provider": "osv",
      "references": [
        "https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29421.json",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-29421",
        "https://github.com/kspalaiologos/bzip3/issues/94"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29421.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-29421",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498480,
  "published_at": "2023-04-06T00:00:00+00:00"
}