Learn about CVE-2021-21030, a high-impact stored cross-site scripting vulnerability in Magento Commerce versions <= 2.4.1, <= 2.4.0-p1, <= 2.3.6. Explore the impact, technical details, and mitigation steps.
Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier), and 2.3.6 (and earlier) are vulnerable to a stored cross-site scripting (XSS) vulnerability in the customer address upload feature. Successful exploitation could lead to arbitrary JavaScript execution in the victim's browser, requiring user interaction.
Understanding CVE-2021-21030
This CVE relates to a stored cross-site scripting vulnerability identified in Magento Commerce versions 2.4.1 and earlier, 2.4.0-p1 and earlier, as well as 2.3.6 and earlier. The vulnerability allows attackers to execute arbitrary JavaScript code in the user’s browser.
What is CVE-2021-21030?
CVE-2021-21030 is a stored cross-site scripting (XSS) vulnerability in Magento Commerce, enabling attackers to inject malicious scripts into the customer address upload feature, potentially leading to unauthorized JavaScript execution on the victim's browser.
The Impact of CVE-2021-21030
The impact of this CVE is rated as high, with a base severity score of 8.1. Successful exploitation of this vulnerability could result in compromising the confidentiality, integrity, and availability of the affected system, posing significant risks to users.
Technical Details of CVE-2021-21030
This section details the vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability in Magento Commerce versions 2.4.1 and earlier, 2.4.0-p1 and earlier, as well as 2.3.6 and earlier, allows for stored cross-site scripting (XSS) in the customer address upload feature, enabling arbitrary JavaScript execution.
Affected Systems and Versions
Magento Commerce versions <= 2.4.1, <= 2.4.0-p1, <= 2.3.6 are affected, making these versions susceptible to the stored XSS vulnerability.
Exploitation Mechanism
Exploitation of this issue requires user interaction wherein an attacker could craft a malicious script and lure a targeted user into triggering the vulnerability, leading to arbitrary script execution.
Mitigation and Prevention
Here, we discuss immediate steps to take, long-term security practices, and the importance of patching and updates.
Immediate Steps to Take
Long-Term Security Practices
Implementing secure coding practices, regular security audits, and providing security awareness training to users can help prevent similar vulnerabilities in the future.
Patching and Updates
Magento Commerce users should regularly check for security updates and apply patches promptly to ensure that their systems are protected against known vulnerabilities.