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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References
History
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MITRE
Status: PUBLISHED
Assigner: apache
Published: 2021-07-12T14:55:12
Updated: 2024-08-03T22:40:31.655Z
Reserved: 2021-04-13T00:00:00
Link: CVE-2021-30639
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-07-12T15:15:08.333
Modified: 2024-11-21T06:04:20.727
Link: CVE-2021-30639
Redhat