CVE-2015-9544: Improper Input Validation in xdLocalStorage
Summary
CVE-2015-9544: Improper Input Validation 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 locally in the user's browser and accessed by multiple domains. This package is vulnerable to an improper input validation issue in the receiveMessage() function of the xdLocalStoragePostMessageApi.js file. This function does not validate the origin of web messages, making it susceptible to exploitation by remote attackers. If a user visits a malicious site, the attacker can send malicious web messages to impact the confidentiality and integrity of data stored in the local storage of the vulnerable site.
Vulnerability Detail
The vulnerability arises from the lack of origin validation in the receiveMessage() function of xdLocalStorage. This allows remote attackers to send malicious web messages to the vulnerable site, potentially compromising the confidentiality and integrity of the data stored in the local storage. By enticing a user to visit a malicious site, an attacker can exploit this vulnerability and gain unauthorized access to sensitive information. The impact of this vulnerability can be severe, as it can lead to data leakage, unauthorized modifications, and potential security breaches.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the package is not immediately feasible, a temporary workaround can be implemented by manually validating the origin of web messages in the receiveMessage() function. Here is an example of how the validation can be added:
function receiveMessage(event) {
if (event.origin === 'https://trusted-domain.com') {
// Process the message
}
}
Conclusion
The improper input validation vulnerability in xdLocalStorage can have severe consequences for the confidentiality and integrity of data stored in the local storage of affected sites. It is crucial to update the xdLocalStorage package to the latest version (2.0.6 or later) to mitigate this vulnerability. If immediate updating is not possible, implementing the provided workaround can provide temporary protection. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows remote attackers to compromise the confidentiality and integrity of data stored in the local storage of the vulnerable site. This can lead to data leakage, unauthorized modifications, and potential security breaches.
By enticing a user to visit a malicious site, an attacker can send malicious web messages to the vulnerable site, exploiting the lack of origin validation in the receiveMessage() function.
Yes, updating the xdLocalStorage package to version 2.0.6 or later will fix this vulnerability. The maintainers have implemented proper origin validation in the receiveMessage() function.
A temporary workaround is to manually validate the origin of web messages in the receiveMessage() function. This can be done by checking the event.origin property against a trusted domain.
There are no known public exploits for this vulnerability at the moment. However, it is important to patch the vulnerability as soon as possible to prevent potential attacks.
References
Related vulnerabilities
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