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Improper Locking Affecting tomcat-el-3_0-api package, versions <9.0.30-3.34.1

0.0
medium

Snyk CVSS

    Attack Complexity Low
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NVD
7.5 high
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SUSE
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-SLES150-TOMCATEL30API-2717561
  • published 14 Apr 2022
  • disclosed 24 Jan 2020
Report a new vulnerability Found a mistake?

Introduced: 24 Jan 2020

CVE-2019-10072 Open this link in a new tab
CWE-667 Open this link in a new tab

How to fix?

Upgrade SLES:15.0 tomcat-el-3_0-api to version 9.0.30-3.34.1 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 fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.