CVE-2021-34429 : Exploit Details and Defense Strategies

This is a detailed article about CVE-2021-34429 affecting Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5, and 11.0.1-11.0.5.

Understanding CVE-2021-34429

This CVE affects Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5, and 11.0.1-11.0.5, allowing crafted URIs to access restricted directories.

What is CVE-2021-34429?

A vulnerability in Eclipse Jetty enables attackers to bypass security constraints using specially crafted URIs.

The Impact of CVE-2021-34429

The vulnerability can lead to unauthorized access to sensitive directories in affected Jetty versions.

Technical Details of CVE-2021-34429

This section covers key technical aspects of the CVE.

Vulnerability Description

URIs containing encoded characters can exploit the vulnerability to access the content of the WEB-INF directory.

Affected Systems and Versions

Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5, and 11.0.1-11.0.5 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can craft URIs with encoded characters to bypass security constraints and access restricted directories.

Mitigation and Prevention

Follow these steps to mitigate the risks associated with CVE-2021-34429.

Immediate Steps to Take

Update Jetty to a patched version or apply vendor-supplied fixes to address the vulnerability.

Long-Term Security Practices

Implement regular security updates for Jetty and monitor security advisories for any new vulnerabilities.

Patching and Updates

Ensure timely application of software patches and updates to protect against known vulnerabilities.