CVE-2018-21234 : Exploit Details and Defense Strategies
Learn about CVE-2018-21234, a vulnerability in Jodd versions prior to 5.0.4 allowing Deserialization of Untrusted JSON Data. Find out the impact, affected systems, exploitation, and mitigation steps.
In versions prior to 5.0.4, Jodd carries out the Deserialization of Untrusted JSON Data upon the activation of setClassMetadataName.
Understanding CVE-2018-21234
Jodd before 5.0.4 performs Deserialization of Untrusted JSON Data when setClassMetadataName is set.
What is CVE-2018-21234?
CVE-2018-21234 is a vulnerability in Jodd versions prior to 5.0.4 that allows the Deserialization of Untrusted JSON Data.
The Impact of CVE-2018-21234
This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) on the affected system.
Technical Details of CVE-2018-21234
Vulnerability Description
Jodd before version 5.0.4 allows the Deserialization of Untrusted JSON Data when setClassMetadataName is activated.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Versions Affected: All versions prior to 5.0.4
Exploitation Mechanism
The vulnerability can be exploited by manipulating the setClassMetadataName function to trigger the Deserialization of Untrusted JSON Data.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade Jodd to version 5.0.4 or later to mitigate the vulnerability.
- Avoid processing untrusted JSON data in applications.
Long-Term Security Practices
- Regularly update and patch software to the latest versions.
- Implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
Ensure that all software dependencies, including Jodd, are regularly updated to address security vulnerabilities.