{"id":"GHSA-44qp-qhfv-c7f6","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.","aliases":["BIT-tomcat-2021-30639","CVE-2021-30639"],"modified":"2024-02-19T05:31:23.767280Z","published":"2021-08-13T15:21:02Z","database_specific":{"github_reviewed_at":"2021-07-13T20:59:46Z","nvd_published_at":"2021-07-12T15:15:00Z","cwe_ids":["CWE-755"],"severity":"HIGH","github_reviewed":true},"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"}],"affected":[{"package":{"name":"org.apache.tomcat:tomcat","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.3"},{"fixed":"10.0.5"}]}],"versions":["10.0.4"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-44qp-qhfv-c7f6/GHSA-44qp-qhfv-c7f6.json"}},{"package":{"name":"org.apache.tomcat:tomcat","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.0.45"}]}],"versions":["9.0.1","9.0.10","9.0.11","9.0.12","9.0.13","9.0.14","9.0.16","9.0.17","9.0.19","9.0.2","9.0.20","9.0.21","9.0.22","9.0.24","9.0.26","9.0.27","9.0.29","9.0.30","9.0.31","9.0.33","9.0.34","9.0.35","9.0.36","9.0.37","9.0.38","9.0.39","9.0.4","9.0.40","9.0.41","9.0.43","9.0.44","9.0.5","9.0.6","9.0.7","9.0.8"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-44qp-qhfv-c7f6/GHSA-44qp-qhfv-c7f6.json"}},{"package":{"name":"org.apache.tomcat:tomcat","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.65"}]}],"versions":["7.0.100","7.0.103","7.0.104","7.0.105","7.0.106","7.0.107","7.0.108","7.0.109","7.0.35","7.0.37","7.0.39","7.0.40","7.0.41","7.0.42","7.0.47","7.0.50","7.0.52","7.0.53","7.0.54","7.0.55","7.0.56","7.0.57","7.0.59","7.0.61","7.0.62","7.0.63","7.0.64","7.0.65","7.0.67","7.0.68","7.0.69","7.0.70","7.0.72","7.0.73","7.0.75","7.0.76","7.0.77","7.0.78","7.0.79","7.0.81","7.0.82","7.0.84","7.0.85","7.0.86","7.0.88","7.0.90","7.0.91","7.0.92","7.0.93","7.0.94","7.0.96","7.0.99","8.0.0-RC1","8.0.0-RC10","8.0.0-RC3","8.0.0-RC5","8.0.1","8.0.11","8.0.12","8.0.14","8.0.15","8.0.17","8.0.18","8.0.20","8.0.21","8.0.22","8.0.23","8.0.24","8.0.26","8.0.27","8.0.28","8.0.29","8.0.3","8.0.30","8.0.32","8.0.33","8.0.35","8.0.36","8.0.37","8.0.38","8.0.39","8.0.41","8.0.42","8.0.43","8.0.44","8.0.45","8.0.46","8.0.47","8.0.48","8.0.49","8.0.5","8.0.50","8.0.51","8.0.52","8.0.53","8.0.8","8.0.9","8.5.0","8.5.11","8.5.12","8.5.13","8.5.14","8.5.15","8.5.16","8.5.19","8.5.2","8.5.20","8.5.21","8.5.23","8.5.24","8.5.27","8.5.28","8.5.29","8.5.3","8.5.30","8.5.31","8.5.32","8.5.33","8.5.34","8.5.35","8.5.37","8.5.38","8.5.39","8.5.4","8.5.40","8.5.41","8.5.42","8.5.43","8.5.45","8.5.46","8.5.47","8.5.49","8.5.5","8.5.50","8.5.51","8.5.53","8.5.54","8.5.55","8.5.56","8.5.57","8.5.58","8.5.59","8.5.6","8.5.60","8.5.61","8.5.63","8.5.64","8.5.8","8.5.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-44qp-qhfv-c7f6/GHSA-44qp-qhfv-c7f6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}