CVE-2021-30639 – org.apache.tomcat:tomcat

Package

Manager: maven
Name: org.apache.tomcat:tomcat
Vulnerable Version: >=10.0.3 <10.0.5 || >=9.0.0 <9.0.45 || >=0 <8.5.65

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00343 pctl0.5626

Details

Improper Handling of Exceptional Conditions in Apache Tomcat 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.

Metadata

Created: 2021-08-13T15:21:02Z
Modified: 2022-02-08T21:20:55Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-44qp-qhfv-c7f6/GHSA-44qp-qhfv-c7f6.json
CWE IDs: ["CWE-755"]
Alternative ID: GHSA-44qp-qhfv-c7f6
Finding: F096
Auto approve: 1