The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
: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-2021-43980 - Low Severity Vulnerability
Core Tomcat implementation
Library home page: https://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/8.5.70/tomcat-embed-core-8.5.70.jar
Dependency Hierarchy: - spring-boot-starter-web-1.5.22.RELEASE.jar (Root Library) - spring-boot-starter-tomcat-1.5.22.RELEASE.jar - :x: **tomcat-embed-core-8.5.70.jar** (Vulnerable Library)
Found in base branch: master
The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
Publish Date: 2022-09-28
URL: CVE-2021-43980
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - 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/3jjqbsp6j88b198x5rmg99b1qr8ht3g3
Release Date: 2022-09-28
Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 8.5.78
Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 2.0.0.RELEASE
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