Security advisory

{
  "id": "df40b3626180f7b1430d960a6e0640bb81993efa37dbe33ba158ad88082c0e11",
  "url": "https://osv.dev/vulnerability/CVE-2019-13120",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-13120",
    "summary": "Amazon FreeRTOS up to and including v1.4.8 lacks length checking in prvProcessReceivedPublish, resulting in untargetable leakage of arbitrary memory contents on a device to an attacker. If an attacker has the authorization to send a malformed MQTT publish packet to an Amazon IoT Thing, which interacts with an associated vulnerable MQTT message in the application, specific circumstances could trigger this vulnerability.",
    "evidence": "osv:CVE-2019-13120",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-13120",
      "aliases": [
        "CVE-2019-13120"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/aws/amazon-freertos",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "62ec42e0455c0ff6bebd56799b6e6d4123e37c57"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:amazon:amazon_web_services_freertos:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.4.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.4.7",
            "v1.4.8",
            "v1.4.6",
            "v1.4.5",
            "v1.4.4",
            "v1.4.3",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.7",
            "v1.2.6",
            "v1.2.5",
            "v1.2.4",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-13120.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:15.107720415Z",
      "provider": "osv",
      "references": [
        "https://aws.amazon.com/cn/freertos/security-updates/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-13120",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429100,
  "published_at": "2019-10-07T22:15:10.477+00:00"
}