CVE-2020-17527 (High) detected in tomcat-embed-core-9.0.38.jar

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CVE-2020-17527 - High Severity Vulnerability

Vulnerable Library - tomcat-embed-core-9.0.38.jar

Core Tomcat implementation

Dependency Hierarchy: - spring-boot-starter-web-2.3.4.RELEASE.jar (Root Library) - spring-boot-starter-tomcat-2.3.4.RELEASE.jar - :x: **tomcat-embed-core-9.0.38.jar** (Vulnerable Library)

Found in HEAD commit: 39e2a0625a107e4f4bc47a7c4faabcf6fab38ec7

Found in base branch: master

Vulnerability Details

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.

Publish Date: 2020-12-03

URL: CVE-2020-17527

CVSS 3 Score Details (7.5)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - 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/0nl7j4lr5j6jvwh45d2lhtjysqvnwnqx

Release Date: 2020-12-03

Fix Resolution (org.apache.tomcat.embed:tomcat-embed-core): 9.0.40

Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-web): 2.3.7.RELEASE

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