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Resource Exhaustion Affecting jws5-tomcat-servlet-4.0-api package, versions <0:9.0.21-10.redhat_4.1.el7jws

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
17.99% (97th percentile)

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  • Snyk IDSNYK-RHEL7-JWS5TOMCATSERVLET40API-3509908
  • published26 Jul 2021
  • disclosed25 Mar 2019
Report a new vulnerability Found a mistake?

Introduced: 25 Mar 2019

CVE-2019-0199  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:7 jws5-tomcat-servlet-4.0-api to version 0:9.0.21-10.redhat_4.1.el7jws or higher.
This issue was patched in RHSA-2019:3929.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jws5-tomcat-servlet-4.0-api package and not the jws5-tomcat-servlet-4.0-api package as distributed by RHEL. See How to fix? for RHEL:7 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