CVE-2021-22523 : Security Advisory and Response

This article provides detailed information about CVE-2021-22523, a XML External Entity vulnerability found in Micro Focus Verastream Host Integrator versions 7.8 Update 1 and earlier.

Understanding CVE-2021-22523

CVE-2021-22523 is a vulnerability in Micro Focus Verastream Host Integrator that allows for XML External Entity attacks, potentially leading to browser takeover and user session hijacking.

What is CVE-2021-22523?

CVE-2021-22523 is an XML External Entity (XXE) vulnerability present in versions 7.8 Update 1 and earlier of Micro Focus Verastream Host Integrator. Attackers can exploit this vulnerability to manipulate XML input processing.

The Impact of CVE-2021-22523

This vulnerability could be exploited to control web browsers and hijack user sessions, posing a serious threat to the confidentiality and integrity of sensitive data.

Technical Details of CVE-2021-22523

CVE-2021-22523 is primarily characterized by its vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability resides in the XML External Entity processing of Micro Focus Verastream Host Integrator, specifically affecting versions 7.8 Update 1 and earlier.

Affected Systems and Versions

Micro Focus Verastream Host Integrator versions 7.8 Update 1 and earlier are impacted by this vulnerability, exposing them to potential XML External Entity attacks.

Exploitation Mechanism

Attackers can exploit CVE-2021-22523 by injecting malicious XML content, allowing them to control web browsers and compromise user sessions.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-22523, immediate steps should be taken to secure affected systems and implement long-term security practices.

Immediate Steps to Take

Organizations should apply security patches provided by Micro Focus to address the vulnerability in Verastream Host Integrator and prevent exploitation.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and ensuring timely software updates can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly update Micro Focus Verastream Host Integrator to the latest version to ensure protection against known vulnerabilities and exploit attempts.