CVE-2020-25689 : Exploit Details and Defense Strategies

A memory leak flaw in WildFly up to version 21.0.0.Final allows an attacker to cause an Out of Memory issue, leading to a denial of service.

Understanding CVE-2020-25689

A memory leak vulnerability in WildFly up to version 21.0.0.Final can be exploited to trigger an Out of Memory issue, resulting in a denial of service.

What is CVE-2020-25689?

This CVE refers to a memory leak flaw in WildFly versions up to 21.0.0.Final. The vulnerability occurs when the host-controller attempts to reconnect in a loop, generating new connections that are not properly closed while failing to connect to the domain-controller. This flaw can be exploited by an attacker to cause an Out of Memory (OOM) issue, leading to a denial of service.

The Impact of CVE-2020-25689

The highest threat posed by this vulnerability is to system availability.

Technical Details of CVE-2020-25689

A memory leak vulnerability in WildFly up to version 21.0.0.Final.

Vulnerability Description

The flaw allows an attacker to trigger an Out of Memory issue, resulting in a denial of service.

Affected Systems and Versions

Vendor: Red Hat
Product: wildfly-core
Affected Versions: up to 21.0.0.Final

Exploitation Mechanism

Attacker exploits the memory leak flaw in WildFly to cause an Out of Memory issue, leading to a denial of service.

Mitigation and Prevention

Steps to address the CVE-2020-25689 vulnerability.

Immediate Steps to Take

Apply patches or updates provided by the vendor.
Monitor system resources for any unusual memory consumption.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement proper resource management practices to mitigate memory leaks.

Patching and Updates

Red Hat may release patches or updates to address the memory leak vulnerability in WildFly.