Vulnerability from bitnami_vulndb
Published
2024-03-06 11:09
Modified
2026-03-20 09:47
Summary
DoS via memory leak with WebSocket connections
Details

The fix for bug 63362 present in Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "tomcat",
        "purl": "pkg:bitnami/tomcat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.5.60"
            },
            {
              "fixed": "8.5.72"
            },
            {
              "introduced": "9.0.40"
            },
            {
              "fixed": "9.0.54"
            },
            {
              "introduced": "10.0.1"
            },
            {
              "fixed": "10.0.12"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-42340"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "The fix for bug 63362 present in Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.",
  "id": "BIT-tomcat-2021-42340",
  "modified": "2026-03-20T09:47:33.381Z",
  "published": "2024-03-06T11:09:50.280Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10379"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r8097a2d1550aa78e585fc77e602b9046e6d4099d8d132497c5387784%40%3Ccommits.myfaces.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-34"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20211104-0001/"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5009"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42340"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "DoS via memory leak with WebSocket connections"
}


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