CVE-2020-14326 Explained : Impact and Mitigation

A vulnerability was found in RESTEasy that could lead to a denial of service attack due to hash flooding and increased CPU usage.

Understanding CVE-2020-14326

This CVE identifies a flaw in RESTEasy that allows attackers to exploit hash flooding, resulting in slower requests and higher CPU utilization.

What is CVE-2020-14326?

The vulnerability in RESTEasy stems from RootNode incorrectly caching routes, leading to hash flooding and potential denial of service attacks.

The Impact of CVE-2020-14326

The vulnerability can be exploited by attackers to cause denial of service by flooding the hash and consuming excessive CPU resources.

Technical Details of CVE-2020-14326

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw in RESTEasy allows attackers to flood the hash, resulting in slower requests and increased CPU time spent searching and adding entries.

Affected Systems and Versions

Product: RESTEasy
Version: RESTEasy 4.5.6.Final

Exploitation Mechanism

Attackers can exploit the incorrect caching of routes in RootNode to flood the hash, causing denial of service.

Mitigation and Prevention

To address CVE-2020-14326, follow these mitigation strategies:

Immediate Steps to Take

Apply patches or updates provided by the vendor.
Monitor system performance for any signs of unusual activity.
Implement network-level protections to mitigate potential denial of service attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and audits to identify and remediate weaknesses.

Patching and Updates

Stay informed about security advisories and updates from the vendor.
Apply patches promptly to mitigate the risk of exploitation.