CVE-2024-22271
📋 TL;DR
Spring Cloud Function framework versions 4.0.0-4.0.7 and 4.1.0-4.1.1 are vulnerable to denial-of-service attacks when using the Web module. Attackers can trigger resource exhaustion by attempting to compose functions with non-existing functions, potentially crashing the application. This affects applications using Spring Cloud Function with web endpoints exposed.
💻 Affected Systems
- Spring Cloud Function Framework
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete application unavailability due to resource exhaustion, requiring service restart and potentially causing extended downtime.
Likely Case
Degraded performance and intermittent service disruptions as the application struggles with malformed function composition requests.
If Mitigated
Minimal impact with proper request validation and resource limits in place, though some performance degradation may still occur.
🎯 Exploit Status
Simple HTTP requests can trigger the vulnerability without authentication. Public exploit details are available in security advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.8 or 4.1.2
Vendor Advisory: https://spring.io/security/cve-2024-22271
Restart Required: Yes
Instructions:
1. Update Spring Cloud Function dependency to version 4.0.8 or 4.1.2 in your build configuration. 2. Rebuild and redeploy your application. 3. Restart the application server.
🔧 Temporary Workarounds
Disable function composition
allTemporarily disable function composition features in Spring Cloud Function configuration
spring.cloud.function.compose.enabled=false
Implement request filtering
allAdd web application firewall or request filtering to block malformed function composition requests
🧯 If You Can't Patch
- Implement rate limiting on function composition endpoints
- Deploy behind a WAF with DoS protection rules
🔍 How to Verify
Check if Vulnerable:
Check your pom.xml or build.gradle for Spring Cloud Function version 4.0.0-4.0.7 or 4.1.0-4.1.1Check Version:
mvn dependency:tree | grep spring-cloud-function OR gradle dependencies | grep spring-cloud-functionVerify Fix Applied:
Verify Spring Cloud Function version is 4.0.8+ or 4.1.2+ in your dependency management file📡 Detection & Monitoring
Log Indicators:
- Multiple failed function composition attempts
- Stack traces related to function resolution
- High CPU/memory usage spikes
Network Indicators:
- Repeated POST requests to function composition endpoints
- Abnormal request patterns to /functionRouter endpoint
SIEM Query:
source="application.log" AND ("function composition" OR "FunctionNotFoundException") AND count > 10