Test ID:	1.3.6.1.4.1.25623.1.0.146269
Category:	Web Servers
Title:	Apache Tomcat DoS Vulnerability (Jul 2021) - Windows
Summary:	Apache Tomcat is prone to a denial of service (DoS) vulnerability.
Description:	Summary: Apache Tomcat is prone to a denial of service (DoS) vulnerability. Vulnerability Insight: An error introduced as part of a change to improve error handling during non-blocking I/O means that the error flag associated with the Request object is not reset between requests. This means that once a non-blocking I/O error occurres, all future requests handled by that request object will fail. Users are 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. Affected Software/OS: Apache Tomcat 8.5.64, 9.0.44 and 10.0.3 through 10.0.4. Solution: Update to version 8.5.65, 9.0.45, 10.0.5 or later. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-30639 https://kc.mcafee.com/corporate/index?page=content&id=SB10366 https://security.netapp.com/advisory/ntap-20210827-0007/ https://security.gentoo.org/glsa/202208-34 https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3E https://www.oracle.com/security-alerts/cpujan2022.html https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cdev.tomcat.apache.org%3E https://lists.apache.org/thread.html/r79a7c019712b39aedf7cf4da9276d80610f04441b2a4f6506cb2daaf@%3Cusers.tomcat.apache.org%3E
Copyright	Copyright (C) 2021 Greenbone Networks GmbH

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