CVE-2021-43980 (Medium) detected in tomcat-embed-core-8.5.28.jar

[mend-bolt-for-github]

CVE-2021-43980 - Medium Severity Vulnerability

Vulnerable Library - tomcat-embed-core-8.5.28.jar

Core Tomcat implementation

Library home page: http://tomcat.apache.org/

Path to dependency file: /sonatype-depshield-demo/pom.xml

Path to vulnerable library: /root/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.5.28/tomcat-embed-core-8.5.28.jar

Dependency Hierarchy:

• spring-boot-starter-web-2.0.0.RELEASE.jar (Root Library)
  • spring-boot-starter-tomcat-2.0.0.RELEASE.jar
    • ❌ tomcat-embed-core-8.5.28.jar (Vulnerable Library)

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 (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • 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.

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

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