Security advisory

{
  "id": "d90b432a40f3f17ee53b4ddbdc53e8cc0b9589232fe29488fac3a319464b077f",
  "url": "https://osv.dev/vulnerability/CVE-2021-33938",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33938",
    "summary": "Buffer overflow vulnerability in function prune_to_recommended in src/policy.c in libsolv before 0.7.17 allows attackers to cause a Denial of Service.",
    "evidence": "osv:CVE-2021-33938",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-33938",
      "aliases": [
        "CVE-2021-33938"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opensuse/libsolv",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "4bc791c0d235eb14bfe4c5da607206bfdfa6983d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.7.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.7.17",
            "0.7.16",
            "0.7.15",
            "0.7.14",
            "0.7.13",
            "0.7.12",
            "0.7.11",
            "0.7.10",
            "0.7.9",
            "0.7.8",
            "0.7.7",
            "0.7.6",
            "0.7.5",
            "0.7.4",
            "0.7.3",
            "0.7.2",
            "0.7.1",
            "0.7.0",
            "0.6.35",
            "0.6.34",
            "0.6.33",
            "0.6.32",
            "0.6.31",
            "0.6.30",
            "0.6.29",
            "0.6.28",
            "0.6.27",
            "0.6.26",
            "0.6.25",
            "0.6.24",
            "0.6.23",
            "0.6.22",
            "0.6.21",
            "0.6.20",
            "0.6.19",
            "0.6.18",
            "0.6.17",
            "0.6.16",
            "0.6.15",
            "0.6.14",
            "0.6.13",
            "0.6.12",
            "0.6.11",
            "0.6.10",
            "0.6.9",
            "0.6.8",
            "0.6.7",
            "0.6.6",
            "0.6.5",
            "0.6.4",
            "BASE-SuSE-Code-13_1-Branch",
            "BASE-SuSE-Code-12_3-Branch",
            "BASE-SuSE-Code-12_2-Branch",
            "BASE-SuSE-Code-12_1-Branch"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33938.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:44.748290991Z",
      "provider": "osv",
      "references": [
        "https://github.com/openSUSE/libsolv/issues/420"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33938",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386057,
  "published_at": "2021-09-02T15:15:07.803+00:00"
}