CVE-2021-30639

HIGH7.5EPSS 0.42%

DoS after non-blocking IO error

發布日:2021/8/13修改日:2025/5/20

描述

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.

受影響套件(2)

Bitnami/tomcat>= 8.5.64, < 8.5.65, >= 9.0.44, < 9.0.45, >= 10.0.3, < 10.0.4, >= 10.0.4, < 10.0.5
Maven/org.apache.tomcat:tomcat>= 10.0.3, < 10.0.5

CVSS 分數

來源	版本	嚴重程度	向量
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

描述

受影響套件(2)

CVSS 分數

參考連結(11)