CVE-2021-20484 : Exploit Details and Defense Strategies

IBM Sterling File Gateway 2.2.0.0 through 6.1.0.3 is vulnerable to a cross-site scripting (XSS) attack. This vulnerability enables users to inject arbitrary JavaScript code into the Web UI, potentially leading to unauthorized access and information disclosure.

Understanding CVE-2021-20484

This section provides detailed insights into the impact, technical details, and mitigation strategies related to CVE-2021-20484.

What is CVE-2021-20484?

CVE-2021-20484 pertains to a cross-site scripting vulnerability affecting IBM Sterling File Gateway versions 2.2.0.0 through 6.1.0.3. Exploiting this flaw allows threat actors to insert malicious scripts into web applications viewed by other users.

The Impact of CVE-2021-20484

The vulnerability poses a medium-severity risk, with a CVSS base score of 5.4 out of 10. Attackers can abuse this weakness to modify the behavior of the Web UI, potentially leading to the exposure of sensitive information, such as user credentials, within a trusted session.

Technical Details of CVE-2021-20484

Explore the specifics of the vulnerability, including its description, affected systems, and the exploitation mechanism utilized.

Vulnerability Description

IBM Sterling File Gateway is susceptible to a cross-site scripting flaw that enables threat actors to execute arbitrary JavaScript code within the Web UI, altering its intended functionality and possibly compromising sensitive data.

Affected Systems and Versions

The vulnerability impacts IBM's Sterling File Gateway versions 2.2.0.0 through 6.1.0.3, leaving these systems exposed to potential XSS attacks.

Exploitation Mechanism

Threat actors can exploit the XSS vulnerability in IBM Sterling File Gateway by injecting malicious JavaScript code into the Web UI, manipulating the application's behavior to execute unauthorized actions.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-20484 and safeguard vulnerable systems from potential exploitation.

Immediate Steps to Take

Organizations should apply official patches and updates released by IBM to address the XSS vulnerability in Sterling File Gateway versions 2.2.0.0 through 6.1.0.3. Additionally, users must remain vigilant and report any suspicious activities related to potential XSS attacks.

Long-Term Security Practices

Establishing robust security measures, including regular security assessments and user training, can help mitigate the risks of XSS attacks and enhance the overall resilience of the IT environment.

Patching and Updates

Regularly monitor IBM's security advisories and promptly apply recommended patches and updates to ensure the protection of Sterling File Gateway against known vulnerabilities.