CVE-2019-19343 : Security Advisory and Response

Undertow within Red Hat Jboss EAP versions 7.2.4 and earlier, when using Remoting, is vulnerable to a memory leak issue that could lead to a denial of service.

Understanding CVE-2019-19343

A vulnerability in Undertow within Red Hat Jboss EAP versions 7.2.4 and earlier, impacting memory usage and potentially causing denial of service.

What is CVE-2019-19343?

The vulnerability involves a memory leak in HttpOpenListener due to holding remote connections indefinitely, affecting Undertow and jboss-remoting versions.

The Impact of CVE-2019-19343

Exploitation of this vulnerability could result in a denial of service, impacting the availability of affected systems.

Technical Details of CVE-2019-19343

The technical aspects of the vulnerability and affected systems.

Vulnerability Description

A memory leak in HttpOpenListener in Undertow within Red Hat Jboss EAP versions 7.2.4 and earlier when using Remoting, leading to potential denial of service.

Affected Systems and Versions

Product: Undertow
Vendor: n/a
Versions: undertow 2.0.25.SP1, jboss-remoting 5.0.14.SP1

Exploitation Mechanism

The flaw occurs when remote connections are held indefinitely, causing excessive memory consumption and potential denial of service.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-19343.

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Monitor system resources for unusual memory consumption.
Implement network-level controls to limit exposure.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and audits to identify and remediate weaknesses.
Implement proper resource management practices to prevent memory leaks.

Patching and Updates

Red Hat has released patches for Undertow versions 2.0.25.SP1 and jboss-remoting 5.0.14.SP1 to address the memory leak vulnerability.