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CVE-2021-30639

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202208-34
Posted Aug 22, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202208-34 - Multiple vulnerabilities have been discovered in Apache Tomcat, the worst of which could result in denial of service. Versions less than 8.5.82:8.5 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2021-25122, CVE-2021-25329, CVE-2021-30639, CVE-2021-30640, CVE-2021-33037, CVE-2021-42340, CVE-2022-34305
SHA-256 | 077be2b54802b552aa2444c9d86f7b9f2b66179442ffb4c75ef491cd837caab4
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