In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.
CVE-2020-1935 - 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
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.
Publish Date: 2020-02-24
URL: CVE-2020-1935
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: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/advisories/GHSA-6v7p-v754-j89v
Release Date: 2020-02-24
Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 8.5.51
Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 2.1.0.RELEASE
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