ghsa-44qp-qhfv-c7f6
Vulnerability from github
Published
2021-08-13 15:21
Modified
2022-02-08 21:20
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Improper Handling of Exceptional Conditions in Apache Tomcat
Details

A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.

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{
   affected: [
      {
         package: {
            ecosystem: "Maven",
            name: "org.apache.tomcat:tomcat",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "10.0.3",
                  },
                  {
                     fixed: "10.0.5",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
      },
      {
         package: {
            ecosystem: "Maven",
            name: "org.apache.tomcat:tomcat",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "9.0.0",
                  },
                  {
                     fixed: "9.0.45",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
      },
      {
         package: {
            ecosystem: "Maven",
            name: "org.apache.tomcat:tomcat",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "0",
                  },
                  {
                     fixed: "8.5.65",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
      },
   ],
   aliases: [
      "CVE-2021-30639",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-755",
      ],
      github_reviewed: true,
      github_reviewed_at: "2021-07-13T20:59:46Z",
      nvd_published_at: "2021-07-12T15:15:00Z",
      severity: "HIGH",
   },
   details: "A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.",
   id: "GHSA-44qp-qhfv-c7f6",
   modified: "2022-02-08T21:20:55Z",
   published: "2021-08-13T15:21:02Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-30639",
      },
      {
         type: "WEB",
         url: "https://kc.mcafee.com/corporate/index?page=content&id=SB10366",
      },
      {
         type: "WEB",
         url: "https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E",
      },
      {
         type: "WEB",
         url: "https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E",
      },
      {
         type: "WEB",
         url: "https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%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-20210827-0007",
      },
      {
         type: "WEB",
         url: "https://www.oracle.com/security-alerts/cpujan2022.html",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
   summary: "Improper Handling of Exceptional Conditions in Apache Tomcat",
}


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