CVE-2021-20751: EC-CUBE Cross-site scripting vulnerability
Summary
CVE-2021-20751: EC-CUBE Cross-site scripting vulnerability. Affects ec-cube/ec-cube versions >= 4.0.0, < 4.0.6. Fixed in 4.0.6. How to fix ↓
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Background
EC-CUBE is an open-source e-commerce platform developed in PHP. It provides various features for building and managing online stores. The vulnerability affects EC-CUBE versions 4.0.0 to 4.0.5-p1 (EC-CUBE 4 series).
Vulnerability Detail
The vulnerability in EC-CUBE allows a remote attacker to perform a cross-site scripting (XSS) attack. By leading an administrator or a user to a specially crafted page and performing a specific operation, the attacker can inject arbitrary scripts into the application. This can lead to unauthorized access, data theft, or other malicious activities.
How To Fix
Minimum fixed version
4.0.6
This is the first release that contains the fix.
composer require ec-cube/ec-cube:4.0.6Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version is not immediately possible, a temporary workaround is to implement input validation and output encoding to prevent the execution of malicious scripts. This can be done by using security libraries or frameworks that provide built-in protection against XSS attacks.
Conclusion
The EC-CUBE Cross-site scripting vulnerability (CVE-2021-20751) allows remote attackers to inject arbitrary scripts into EC-CUBE, potentially leading to unauthorized access, data theft, or other malicious activities. It is crucial to upgrade to the latest version of EC-CUBE (4.0.6 or later) to mitigate this vulnerability. Implementing input validation and output encoding can serve as a temporary workaround until the upgrade is performed. For further support on vulnerability remediation, contact DevNack.com.
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FAQ
The vulnerability allows an attacker to inject arbitrary scripts into EC-CUBE, potentially leading to unauthorized access, data theft, or other malicious activities.
EC-CUBE versions 4.0.0 to 4.0.5-p1 (EC-CUBE 4 series) are affected by this vulnerability. Users of these versions should upgrade to the latest version as soon as possible.
At the time of this advisory, there are no known public exploits for this vulnerability. However, it is important to apply the recommended fixes to prevent any potential attacks.
Yes, this vulnerability can be exploited remotely. An attacker can lead an administrator or a user to a specially crafted page and perform a specific operation to inject arbitrary scripts.
Yes, the CVSS score for this vulnerability is 6.1, indicating a moderate severity level.
References
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