If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
CVE-2020-13943 - Medium Severity Vulnerability
Core Tomcat implementation
Library home page: http://tomcat.apache.org/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.32/tomcat-embed-core-8.5.32.jar
Dependency Hierarchy: - spring-boot-starter-web-2.0.4.RELEASE.jar (Root Library) - spring-boot-starter-tomcat-2.0.4.RELEASE.jar - :x: **tomcat-embed-core-8.5.32.jar** (Vulnerable Library)
Found in HEAD commit: 34ce0f6524391068ef5b880f65575eb3eb499124
Found in base branch: master
If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
Publish Date: 2020-10-12
URL: CVE-2020-13943
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E
Release Date: 2020-10-12
Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 8.5.58
Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 2.1.0.RELEASE
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