A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by mod_cluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because mod_proxy_cluster marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the max-header-size, causing a Denial of Service (DoS).
CVE-2023-5379 - High Severity Vulnerability
Undertow
Library home page: http://www.jboss.org
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/undertow/undertow-core/2.0.19.Final/undertow-core-2.0.19.Final.jar
Dependency Hierarchy: - spring-boot-starter-undertow-2.1.4.RELEASE.jar (Root Library) - :x: **undertow-core-2.0.19.Final.jar** (Vulnerable Library)
Found in HEAD commit: 3f6d614029f4d6cfdddfcef8468949cb7822503c
Found in base branch: master
A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by mod_cluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because mod_proxy_cluster marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the max-header-size, causing a Denial of Service (DoS).
Publish Date: 2023-12-12
URL: CVE-2023-5379
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.Type: Upgrade version
Release Date: 2023-12-12
Fix Resolution (io.undertow:undertow-core): 2.2.31.Final
Direct dependency fix Resolution (org.springframework.boot:spring-boot-starter-undertow): 3.0.0
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