Critical Vulnerability in node-xml2js: Insecure JSON Key Handling
Summary
DEBIAN-CVE-2023-0842: xml2js version 0.4.23 allows an external attacker to edit or add new properties to an object. Affects node-xml2js versions < 0.2.8-1.1+deb11u1. Fixed in 0.2.8-1.1+deb11u1. How to fix ↓
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Background
node-xml2js is a popular JavaScript library used for converting XML to JavaScript objects and vice versa. It is widely utilized in applications that require XML parsing and manipulation. The library's ease of use and flexibility make it a go-to choice for developers. However, a recent vulnerability has been identified that compromises its security, allowing unauthorized modifications to object properties.
Vulnerability Detail
The vulnerability in node-xml2js, identified as CVE-2023-0842, arises from improper validation of incoming JSON keys. This flaw allows an external attacker to edit or add new properties to an object by manipulating the proto property. The implications of this vulnerability are significant, as it can lead to unauthorized access and manipulation of application data, potentially compromising the integrity and security of the application.
How To Fix
Minimum fixed version
0.2.8-1.1+deb11u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade node-xml2jsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, developers can implement additional validation checks on incoming JSON keys to prevent unauthorized modifications. This can be done by sanitizing input data before processing it with node-xml2js.
Conclusion
The vulnerability CVE-2023-0842 in the node-xml2js package poses significant security risks due to improper JSON key validation. It is crucial for developers to update their packages to the patched versions and consider implementing additional validation checks as a temporary measure. Monitoring tools like Vulert can assist in identifying vulnerabilities in real-time.
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FAQ
CVE-2023-0842 is a vulnerability in the node-xml2js library that allows attackers to manipulate object properties due to improper validation of JSON keys.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
The risks include unauthorized access to application data and the ability for attackers to manipulate object properties, which can compromise application integrity.
Yes, patches are available for various Debian versions. Ensure to update to the specified patched versions to mitigate the vulnerability.
If immediate updates are not possible, implement input validation checks as a temporary workaround to mitigate the risk until a proper update can be applied.
References
Related vulnerabilities
Recent vulnerabilities recorded for node-xml2js.
