Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack

{
  "id": "549f02b028db95dcbafc262aff1e175eca044dc175ba6d1d357a92991ea22a68",
  "url": "https://osv.dev/vulnerability/CVE-2024-31309",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack",
    "summary": "HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server. Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute. ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.",
    "evidence": "osv:CVE-2024-31309",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-31309",
      "aliases": [
        "CVE-2024-31309"
      ],
      "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/apache/trafficserver",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b310e3566f58dd04ec2b15b111ec86ea70e20019"
                },
                {
                  "fixed": "10bcf264100911987463c5e1cf42998ed257c231"
                },
                {
                  "introduced": "b14030656330ed623cd1f9efe2f4f9abd9d16e29"
                },
                {
                  "fixed": "90fbf13db0858cef0e0a094f445d846b60a4c1ef"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "fixed": "8.1.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "fixed": "9.2.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.1.9-rc0",
            "8.1.9",
            "8.1.8",
            "8.1.8-rc0",
            "8.1.7-rc0",
            "8.1.7",
            "8.1.6-rc0",
            "8.1.6",
            "8.1.5-rc0",
            "8.1.5",
            "8.1.4-rc0",
            "8.1.4",
            "8.1.3-rc1",
            "8.1.3",
            "8.1.3-rc0",
            "8.1.2-rc0",
            "8.1.1-rc0",
            "8.1.1",
            "8.1.0-rc0",
            "8.1.0",
            "8.0.6-rc1",
            "8.0.6",
            "8.0.6-rc0",
            "8.0.5",
            "8.0.4",
            "8.0.4-rc0",
            "8.0.3-rc0",
            "8.0.3",
            "8.0.2-rc0",
            "8.0.2",
            "8.0.1-rc0",
            "8.0.1",
            "8.0.0-rc4",
            "8.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-31309.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.298334944Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2024/04/msg00021.html",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBKLPQ6ECG4PGEPRCYI3Y3OITNDEFCCV/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QV77HYM7ARSTL3B6U3IFG7PHDU65WL4I/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3XON6RM5ZKCZ6K6NB7BOTAWMJQKXJDO/",
        "https://www.kb.cert.org/vuls/id/421644",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/31xxx/CVE-2024-31309.json",
        "https://lists.apache.org/thread/f9qh3g3jvy153wh82pz4onrfj1wh13kc",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-31309"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0.0"
                  },
                  {
                    "last_affected": "8.1.9"
                  },
                  {
                    "introduced": "9.0.0"
                  },
                  {
                    "last_affected": "9.2.3"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/31xxx/CVE-2024-31309.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-31309",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505815,
  "published_at": "2024-04-10T12:07:16.975+00:00"
}