Critical Vulnerability in libjackson-json-java: Arbitrary Code Execution Risk
Summary
USN-4741-1: libjackson-json-java vulnerabilities. Affects libjackson-json-java versions < 1.9.2-7ubuntu0.2. Fixed in 1.9.2-7ubuntu0.2. How to fix ↓
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Background
libjackson-json-java is a Java library that provides functionality for processing JSON data using the Jackson framework. It is widely used in various applications for its ease of use and efficiency in handling JSON serialization and deserialization. However, it has been found to have a critical vulnerability that allows for improper handling of deserialization, potentially leading to severe security risks.
Vulnerability Detail
The vulnerability arises from the way Jackson Databind handles deserialization. An attacker can exploit this flaw to execute arbitrary code on the server or client-side, leading to unauthorized access, data breaches, or complete system compromise. This issue is particularly dangerous as it can be triggered through maliciously crafted JSON input, making it a significant threat to applications relying on this library.
How To Fix
Minimum fixed version
1.9.2-7ubuntu0.2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libjackson-json-javaTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider implementing input validation to sanitize JSON data before deserialization. This can help mitigate the risk of arbitrary code execution. Additionally, avoid using untrusted sources for JSON input.
Conclusion
The vulnerability in libjackson-json-java poses a significant risk due to its potential for arbitrary code execution. It is crucial to update to the patched version to mitigate this risk. For those unable to update immediately, implementing input validation can serve as a temporary workaround.
See every vulnerability recorded for libjackson-json-java →
FAQ
The vulnerability allows for improper handling of deserialization, which can lead to arbitrary code execution.
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Exploiting this vulnerability can lead to unauthorized access, data breaches, or complete system compromise.
Yes, the patched version is 1.9.2-7ubuntu0.2, which addresses the vulnerability.
Implement input validation to sanitize JSON data and avoid using untrusted sources for JSON input as a temporary measure.
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