A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2020-11996 - High Severity Vulnerability
Core Tomcat implementation
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.14/tomcat-embed-core-9.0.14.jar
Dependency Hierarchy: - spring-boot-starter-web-2.1.2.RELEASE.jar (Root Library) - spring-boot-starter-tomcat-2.1.2.RELEASE.jar - :x: **tomcat-embed-core-9.0.14.jar** (Vulnerable Library)
Found in HEAD commit: 4fb542733bde6ab3a1680292943de904d0621c33
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
Publish Date: 2020-06-26
URL: CVE-2020-11996
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://lists.apache.org/thread.html/r5541ef6b6b68b49f76fc4c45695940116da2bcbe0312ef204a00a2e0%40%3Cannounce.tomcat.apache.org%3E,http://tomcat.apache.org/security-10.html
Release Date: 2020-06-26
Fix Resolution: org.apache.tomcat:tomcat-coyote:10.0.0-M6,9.0.36,8.5.56,org.apache.tomcat.embed:org.apache.tomcat.embed:10.0.0-M6,9.0.36,8.5.56
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