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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.
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CVE-2021-43980 (Medium) detected in tomcat-embed-core-8.5.4.jar
CVE-2021-43980 (Low) detected in tomcat-embed-core-8.5.4.jar
Oct 23, 2022
CVE-2021-43980 - Low Severity Vulnerability
Vulnerable Library - tomcat-embed-core-8.5.4.jar
Core Tomcat implementation
Library home page: http://tomcat.apache.org/
Path to dependency file: /pom.xml
Path to vulnerable library: /root/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.4/tomcat-embed-core-8.5.4.jar
Dependency Hierarchy:
Found in HEAD commit: 1d4a86820b5ccc9e51b82198be488c68e9299e40
Found in base branch: master
Vulnerability Details
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
CVSS 3 Score Details (3.7)
Base Score Metrics:
Suggested Fix
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): 2.1.0.RELEASE
⛑️ Automatic Remediation is available for this issue
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