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Resource Exhaustion Affecting tomcat-servlet-4_0-api package, versions <9.0.21-4.5.5

Severity

 Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
17.99% (97th percentile)

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  • Snyk IDSNYK-SLES151-TOMCATSERVLET40API-2744347
  • published14 Apr 2022
  • disclosed18 Jul 2019
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Introduced: 18 Jul 2019

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

How to fix?

Upgrade SLES:15.1 tomcat-servlet-4_0-api to version 9.0.21-4.5.5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-servlet-4_0-api package and not the tomcat-servlet-4_0-api package as distributed by SLES. See How to fix? for SLES:15.1 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