Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
CVE-2021-33037 - 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
Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
Publish Date: 2021-07-12
URL: CVE-2021-33037
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: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://lists.apache.org/thread.html/rd84fae1f474597bdf358f5bdc0a5c453c507bd527b83e8be6b5ea3f4%40%3Cannounce.tomcat.apache.org%3E
Release Date: 2021-07-12
Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 8.5.68
Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 2.1.0.RELEASE
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