{
  "schema_version": "1.4.0",
  "id": "GHSA-4vww-mc66-62m6",
  "modified": "2024-03-11T18:00:29Z",
  "published": "2021-08-13T15:21:14Z",
  "aliases": [
    "CVE-2021-33037"
  ],
  "summary": "HTTP Request Smuggling in Apache Tomcat",
  "details": "Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "10.0.0-M1"
            },
            {
              "fixed": "10.0.7"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "9.0.0-M1"
            },
            {
              "fixed": "9.0.48"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "8.5.0"
            },
            {
              "fixed": "8.5.68"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33037"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/05f9e8b00f5d9251fcd3c95dcfd6cf84177f46c8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/19d11556d0db99df291df33605f137976d152475"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/3202703e6d635e39b74262e81f0cb4bcbe2170dc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/45d70a86a901cbd534f8f570bed2aec9f7f7b88e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/506134f957a4be2c5b4a9334f7b3435fc954dbc1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/8874fa02e9b36baa9ca6b226c0882c0190ca5a02"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/a2c3dc4c96168743ac0bab613709a5bbdaec41d0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/da0e7cb093cf68b052d9175e469dbd0464441b0b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/eee0d024c1b3171560c92eaba79dd6eb8eb11bcd"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-34"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210827-0007"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-10.html"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-8.html"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-9.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-4952"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "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/cpuoct2021.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00009.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/kovg1bft77xo34ksrcskh5nl50p69962"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf1b54fd3f52f998ca4829159a88cc4c23d6cef5c6447d00948e75c97@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/re01e7e93154e8bdf78a11a23f9686427bd3d51fc6e12c508645567b7@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rd0dfea39829bc0606c936a16f6fca338127c86c0a1083970b45ac8d2@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rc6ef52453bb996a98cb45442871a1db56b7c349939e45d829bf9ae37@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r612a79269b0d5e5780c62dfd34286a8037232fec0bc6f1a7e60c9381%40%3Cannounce.tomcat.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r40f921575aee8d7d34e53182f862c45cbb8f3d898c9d4e865c2ec262@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r290aee55b72811fd19e75ac80f6143716c079170c5671b96932ed44b@%3Ccommits.tomee.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10366"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/tomcat"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-07-13T19:38:16Z",
    "nvd_published_at": "2021-07-12T15:15:00Z"
  }
}