WildFly Core Denial of Service via Malformed Payload Injection

Executive Summary

This vulnerability in WildFly Core allows an authenticated administrative user to inject a malformed payload into the Inet Address field through the Management Model. The payload corrupts the standalone.xml configuration file, causing the server to crash and become unrecoverable without manual intervention.

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Detection Guidance

To detect this vulnerability, monitor the WildFly management interface (port 9990) for unusual administrative access attempts or malformed payloads in the Inet Address field. Check the standalone.xml configuration file for unexpected or corrupted entries. Review server logs for crashes or unrecoverable errors related to configuration parsing.

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Impact Analysis

The impact is a denial of service where the server crashes and cannot be restored without manually editing the corrupted configuration file. This requires downtime and administrative effort to recover.

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Compliance Impact

This vulnerability primarily causes a denial of service by crashing the WildFly server and corrupting its configuration file, requiring manual recovery. It does not directly expose or leak data, which is a key concern for GDPR or HIPAA compliance. However, the resulting service disruption could impact availability requirements under these regulations. The need for manual intervention may also delay incident response, potentially affecting compliance timelines.

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Mitigation Strategies

Restrict network access to the WildFly management interface (e.g., port 9990) to trusted hosts only using firewall rules. Ensure only necessary administrative users have access. Regularly audit administrative accounts and monitor for unauthorized changes to the standalone.xml file.

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