CVE-2024-1635 (High) detected in undertow-core-2.0.19.Final.jar

[mend-bolt-for-github]

CVE-2024-1635 - High Severity Vulnerability

Vulnerable Library - undertow-core-2.0.19.Final.jar

Undertow

Path to dependency file: /spring-distributed-tracing/service-reservation/pom.xml

Path to vulnerable library: /root/.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)
  • ❌ undertow-core-2.0.19.Final.jar (Vulnerable Library)

Found in base branch: master

Vulnerability Details

A vulnerability was found in Undertow. This vulnerability impacts a server that supports the wildfly-http-client protocol. Whenever a malicious user opens and closes a connection with the HTTP port of the server and then closes the connection immediately, the server will end with both memory and open file limits exhausted at some point, depending on the amount of memory available.

At HTTP upgrade to remoting, the WriteTimeoutStreamSinkConduit leaks connections if RemotingConnection is closed by Remoting ServerConnectionOpenListener. Because the remoting connection originates in Undertow as part of the HTTP upgrade, there is an external layer to the remoting connection. This connection is unaware of the outermost layer when closing the connection during the connection opening procedure. Hence, the Undertow WriteTimeoutStreamSinkConduit is not notified of the closed connection in this scenario. Because WriteTimeoutStreamSinkConduit creates a timeout task, the whole dependency tree leaks via that task, which is added to XNIO WorkerThread. So, the workerThread points to the Undertow conduit, which contains the connections and causes the leak.

Publish Date: 2024-02-19

URL: CVE-2024-1635

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: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://bugzilla.redhat.com/show_bug.cgi?id=2264928

Release Date: 2024-02-19

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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