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How the CVE Works:
CVE-2025-XXXX exploits an uncontrolled resource consumption flaw in Apache Commons Configuration 1.x. When parsing untrusted configuration files (e.g., XML, properties), the library fails to enforce proper resource limits, allowing attackers to craft malicious inputs that trigger excessive CPU, memory, or disk usage. This occurs due to inefficient parsing logic and lack of input validation, leading to potential denial-of-service (DoS) conditions. The vulnerability is particularly dangerous in environments where configuration files are dynamically loaded from untrusted sources.
DailyCVE Form:
Platform: Apache Commons
Version: <= 1.10
Vulnerability: Resource exhaustion
Severity: Low
Date: May 9, 2025
What Undercode Say:
Exploitation:
1. Malicious Config Payload:
<configuration>
<recursive>${sys:user.dir}</recursive>
</configuration>
Triggers infinite resolution loops.
2. Exploit Command:
curl -X POST --data-binary @malicious.xml http://victim/config/load
3. Memory Exhaustion:
PropertiesConfiguration config = new PropertiesConfiguration();
config.load(new StringReader("key=" + "A".repeat(10000000)));
Protection:
1. Upgrade: Migrate to Commons Configuration 2.x.
2. Input Validation:
if (configFile.length() > MAX_SIZE) throw new SecurityException("Config too large");
3. Rate Limiting:
ulimit -v 500000 Limit process memory
4. Security Config:
<dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-configuration2</artifactId> <version>2.10.0</version> </dependency>
5. Log Monitoring:
grep -i "OutOfMemoryError" /var/log/app.log
6. Sandboxing:
SecurityManager manager = new SecurityManager(); System.setSecurityManager(manager);
7. Patch Workaround:
System.setProperty("org.apache.commons.configuration.disableBeanSupport", "true");
8. Network Controls:
iptables -A INPUT -p tcp --dport 8080 -m connlimit --connlimit-above 10 -j DROP
9. Heap Dump Analysis:
jmap -dump:live,format=b,file=heap.bin <pid>
10. Thread Limits:
ExecutorService executor = Executors.newFixedThreadPool(10);
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
