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Resource Exhaustion Affecting tomcat8-lib package, versions <0:8.5.40-1.79.amzn1

Severity

 Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
72.86% (100th percentile)

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  • Snyk IDSNYK-AMZN201803-TOMCAT8LIB-1717735
  • published27 Sept 2021
  • disclosed10 Apr 2019
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Introduced: 10 Apr 2019

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

How to fix?

Upgrade Amazon-Linux:2018.03 tomcat8-lib to version 0:8.5.40-1.79.amzn1 or higher.
This issue was patched in ALAS-2019-1208.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat8-lib package and not the tomcat8-lib package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 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