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strongswan — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2022-40617

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

Products
strongswan
Affected versions
Not specified
Fixed versions
5.9.8-1
CVEs
CVE-2022-40617
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 15:21 UTC · Revision 1

Source evidence

DEBIAN-CVE-2022-40617

core-osv · Original source

Published 31 Oct 2022, 06:15 UTC

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

osv:DEBIAN-CVE-2022-40617

strongswan

Fixed versions: 5.9.8-1

strongswan

Fixed versions: 5.9.8-1

strongswan

Fixed versions: 5.9.8-1

Complete source record
{
  "id": "48f003e5d69ca336ecaf54fb30154f4d25977729d7ed1eb7415ec05256934030",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-40617",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2022-40617",
    "summary": "strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.",
    "evidence": "osv:DEBIAN-CVE-2022-40617",
    "products": [
      {
        "name": {
          "value": "strongswan",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.9.8-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "strongswan",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.9.8-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "strongswan",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.9.8-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2022-40617",
      "aliases": [
        "DEBIAN-CVE-2022-40617"
      ],
      "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": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.9.8-1"
                }
              ]
            }
          ],
          "package": {
            "name": "strongswan",
            "purl": "pkg:deb/debian/strongswan?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-40617.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.9.8-1"
                }
              ]
            }
          ],
          "package": {
            "name": "strongswan",
            "purl": "pkg:deb/debian/strongswan?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-40617.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.9.8-1"
                }
              ]
            }
          ],
          "package": {
            "name": "strongswan",
            "purl": "pkg:deb/debian/strongswan?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-40617.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-15T08:02:53.905753525Z",
      "provider": "osv",
      "upstream": [
        "CVE-2022-40617"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2022-40617"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2022-40617",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 324527,
  "published_at": "2022-10-31T06:15:09.887+00:00"
}