CVE-2020-11611: Open Redirect in xdLocalStorage
Summary
CVE-2020-11611: Open Redirect in xdLocalStorage. Affects xdlocalstorage versions < 2.0.5. No fix is published. How to fix ↓
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Background
xdLocalStorage is an npm package that provides a cross-domain local storage solution for web applications. It allows data to be stored and accessed across different domains securely. However, a vulnerability has been discovered in versions up to 2.0.5 of xdLocalStorage. This vulnerability allows an attacker to perform an open redirect attack by exploiting the buildMessage() function in xdLocalStorage.js. By specifying the wildcard (*) as the targetOrigin when calling the postMessage() function on the iframe object, any domain currently loaded within the iframe can receive the messages sent by the client.
Vulnerability Detail
The vulnerability arises from the improper use of the wildcard (*) as the targetOrigin in the postMessage() function. This allows an attacker to craft a malicious URL that redirects the user to a different domain, potentially leading to phishing attacks or other malicious activities. The impact of this vulnerability depends on the intentions of the attacker and the trust users place in the redirected domain. It is important to note that this vulnerability only affects versions up to 2.0.5 of xdLocalStorage.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating xdLocalStorage is not immediately feasible, a temporary workaround can be implemented by modifying the buildMessage() function in xdLocalStorage.js. Instead of using the wildcard (*) as the targetOrigin, developers can specify the exact target domain to restrict the messages to that domain only. Here is an example of the modified code:
function buildMessage(message) {
var targetOrigin = 'https://example.com'; // Replace with the desired target domain
iframe.contentWindow.postMessage(message, targetOrigin);
}
Conclusion
In conclusion, the vulnerability CVE-2020-11611 in xdLocalStorage up to version 2.0.5 allows for open redirect attacks. It is crucial to update xdLocalStorage to a version beyond 2.0.5 or implement the provided workaround to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
xdLocalStorage is an npm package that provides a cross-domain local storage solution for web applications. It allows data to be stored and accessed across different domains securely.
An open redirect attack is a type of security vulnerability that allows an attacker to redirect a user to a different domain without their consent. This can be exploited for phishing attacks or to trick users into visiting malicious websites.
Versions up to 2.0.5 of xdLocalStorage are affected by this vulnerability.
The impact of this vulnerability depends on the intentions of the attacker and the trust users place in the redirected domain. It can be used for phishing attacks or to trick users into visiting malicious websites.
To fix this vulnerability, it is recommended to update xdLocalStorage to a version beyond 2.0.5. Alternatively, you can modify the buildMessage() function to specify the exact target domain instead of using the wildcard (*).
References
Related vulnerabilities
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