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Resource Exhaustion Affecting tomcat-el-3_0-api package, versions <9.0.21-3.27.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High
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NVD
7.5 high
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Red Hat
7.5 high
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SUSE
7.5 high

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  • Snyk ID SNYK-SLES150-TOMCATEL30API-2741760
  • published 14 Apr 2022
  • disclosed 12 Jul 2019
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Introduced: 12 Jul 2019

CVE-2019-0199 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

Upgrade SLES:15.0 tomcat-el-3_0-api to version 9.0.21-3.27.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-el-3_0-api package and not the tomcat-el-3_0-api package as distributed by SLES:15.0. See How to fix? for SLES:15.0 relevant fixed versions and status.

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

References