The CVE-2025-XXXX vulnerability in SmallRye Fault Tolerance arises due to an out-of-memory (OOM) issue in the `smallrye-fault-tolerance` library. This flaw is triggered externally when the metrics URI is accessed. Each call to the metrics endpoint creates a new object within the meterMap, which is not properly garbage collected. Over time, this leads to excessive memory consumption, eventually causing the application to crash due to memory exhaustion. This results in a denial-of-service (DoS) condition, rendering the service unavailable to legitimate users. The issue affects versions below 6.9.0, and the patched version 6.9.0 resolves this by implementing proper memory management and garbage collection mechanisms for the meterMap.
DailyCVE Form:
Platform: SmallRye Fault Tolerance
Version: < 6.9.0
Vulnerability: Out-of-Memory (OOM)
Severity: High
Date: Mar 12, 2025
What Undercode Say:
Exploitation:
- Attackers can repeatedly call the metrics URI to trigger the OOM issue.
- Use automated tools like `curl` or scripts to flood the endpoint:
while true; do curl http://target:port/metrics; done
3. Monitor memory usage to confirm exploitation:
watch -n 1 "free -m"
Protection:
1. Upgrade to the patched version 6.9.0:
mvn dependency:tree | grep smallrye-fault-tolerance
2. Apply memory limits to the application container:
docker run -m 512m your-application
3. Implement rate limiting for the metrics endpoint:
@Path("/metrics")
@RateLimited(value = 10, timeUnit = TimeUnit.SECONDS)
public String getMetrics() {
return metricsData;
}
4. Use monitoring tools to detect abnormal memory usage:
jstat -gc <pid> 1000
5. Restrict access to the metrics endpoint using network policies or firewalls.
Analytics:
1. Monitor memory usage trends:
vmstat 1
2. Analyze heap dumps to identify memory leaks:
jmap -dump:live,format=b,file=heapdump.hprof <pid>
3. Use APM tools like New Relic or Dynatrace to track memory spikes.
Code Fix:
1. Update `pom.xml` to the patched version:
<dependency> <groupId>io.smallrye</groupId> <artifactId>smallrye-fault-tolerance</artifactId> <version>6.9.0</version> </dependency>
2. Implement proper garbage collection for `meterMap`:
meterMap.clear(); // Clear unused entries periodically
By following these steps, you can mitigate the CVE-2025-XXXX vulnerability and protect your systems from potential exploitation.
References:
Reported By: https://github.com/advisories/GHSA-gfh6-3pqw-x2j4
Extra Source Hub:
Undercode
