Security advisory

{
  "id": "293161a4eba16fe80891c0089203d8395b28dbba646f58c8c4b0287be6bdfa39",
  "url": "https://osv.dev/vulnerability/CVE-2017-9023",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-9023",
    "summary": "The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.",
    "evidence": "osv:CVE-2017-9023",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-9023",
      "aliases": [
        "CVE-2017-9023"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/strongswan/strongswan",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "bb2ba9f15d3d0ad8205d4bad1adfbdc1b6689eaf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "5.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.5.2",
            "5.5.2rc1",
            "5.5.2dr7",
            "5.5.2dr6",
            "5.5.2dr5",
            "5.5.2dr4",
            "5.5.2dr3",
            "5.5.2dr2",
            "5.5.2dr1",
            "5.5.1",
            "5.5.1rc2",
            "5.5.1rc1",
            "5.5.1dr5",
            "5.5.1dr4",
            "5.5.1dr3",
            "5.5.1dr2",
            "5.5.0",
            "5.5.1dr1",
            "5.5.0rc1",
            "5.5.0dr1",
            "5.4.1dr4",
            "5.4.1dr3",
            "5.4.1dr2",
            "5.4.1dr1",
            "5.4.0",
            "5.4.0rc1",
            "5.4.0dr8",
            "5.4.0dr7",
            "5.4.0dr6",
            "5.4.0dr5",
            "5.4.0dr4",
            "5.4.0dr3",
            "5.4.0dr2",
            "5.4.0dr1",
            "5.3.5",
            "5.3.4",
            "5.3.4rc1",
            "5.3.4dr3",
            "5.3.4dr2",
            "5.3.4dr1",
            "5.3.3",
            "5.3.3rc2",
            "5.3.3dr6",
            "5.3.3dr5",
            "5.3.3dr4",
            "5.3.3dr3",
            "5.3.3dr1",
            "5.3.2",
            "5.3.1",
            "5.3.1rc1",
            "5.3.1dr1",
            "5.3.0",
            "5.3.0rc1",
            "5.3.0dr1",
            "5.2.2",
            "5.2.2rc1",
            "5.2.2dr1",
            "5.2.1",
            "5.2.1rc1",
            "5.2.1dr1",
            "5.2.0",
            "5.2.0rc1",
            "5.2.0dr6",
            "5.2.0dr5",
            "5.2.0dr4",
            "5.2.0dr3",
            "5.2.0dr2",
            "5.2.0dr1",
            "5.1.3",
            "5.1.3rc1",
            "5.1.3dr1",
            "5.1.2",
            "5.1.2rc2",
            "5.1.2rc1",
            "5.1.2dr3",
            "5.1.2.dr2",
            "5.1.2dr1",
            "5.1.1",
            "5.1.1rc1",
            "5.1.1dr4",
            "5.1.1dr3",
            "5.1.1dr2",
            "5.1.1dr1",
            "5.1.0",
            "5.1.0rc1",
            "5.1.0dr2",
            "5.1.0dr1",
            "5.0.4",
            "5.0.3",
            "5.0.3rc1",
            "5.0.2",
            "5.0.3dr3",
            "5.0.3dr2",
            "5.0.3dr1",
            "5.0.2rc1",
            "5.0.2dr4",
            "5.0.1",
            "5.0.0",
            "4.6.3",
            "4.6.2",
            "4.6.1",
            "4.6.0",
            "4.5.3",
            "4.5.2",
            "4.5.1",
            "4.5.0",
            "4.4.1",
            "4.3.6",
            "4.4.0",
            "4.3.5",
            "4.3.5rc1",
            "4.3.4",
            "4.3.3",
            "4.3.2",
            "4.3.1",
            "4.2.14",
            "4.3.0",
            "4.2.13",
            "4.2.12",
            "4.2.11",
            "4.2.10",
            "4.2.9",
            "4.2.8",
            "4.2.7",
            "4.2.6",
            "4.2.5",
            "4.2.4",
            "4.2.3",
            "4.2.2",
            "4.2.1",
            "4.2.0",
            "4.1.11",
            "4.1.10",
            "4.1.9",
            "4.1.8",
            "4.1.7",
            "4.1.6",
            "4.1.5",
            "4.1.4",
            "4.1.3",
            "4.1.2",
            "4.1.1",
            "4.1.0",
            "4.0.7",
            "4.0.6",
            "4.0.5",
            "4.0.4",
            "4.0.3",
            "4.0.2",
            "4.0.1",
            "4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9023.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:25.956451559Z",
      "provider": "osv",
      "references": [
        "https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-9023",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431495,
  "published_at": "2017-06-08T16:29:00.543+00:00"
}