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CVE-2021-30639

Description

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.


Affected Software


CPE Name Name Version
apache:tomcat apache tomcat 10.0.4
apache:tomcat apache tomcat 9.0.44
apache:tomcat apache tomcat 10.0.3
apache:tomcat apache tomcat 8.5.64
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
mcafee:epolicy_orchestrator mcafee epolicy orchestrator 5.10.0
oracle:big_data_spatial_and_graph oracle big data spatial and graph 23.1

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