CVE-2025-59328
📋 TL;DR
This CVE describes a denial-of-service vulnerability in Apache Fory caused by insecure deserialization of untrusted data. Remote attackers can send specially crafted payloads that cause excessive CPU consumption during deserialization, making the application unresponsive. All users of Apache Fory versions before 0.12.2 are affected.
💻 Affected Systems
- Apache Fory
📦 What is this software?
Fory by Apache
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage with prolonged downtime as CPU resources are exhausted, potentially affecting multiple systems if load balancers distribute malicious traffic.
Likely Case
Application becomes unresponsive to legitimate users, requiring manual intervention to restart services and clear the attack traffic.
If Mitigated
Minimal impact with proper input validation, rate limiting, and updated dependencies preventing successful exploitation.
🎯 Exploit Status
Requires crafting specific payloads but no authentication needed if vulnerable endpoint is exposed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.12.2 or later
Vendor Advisory: https://fory.apache.org/security/
Restart Required: No
Instructions:
1. Update Apache Fory dependency to version 0.12.2 or later. 2. Rebuild and redeploy applications using the updated library. 3. Test functionality to ensure compatibility.
🔧 Temporary Workarounds
Input validation and size limits
allImplement strict input validation and size limits on data payloads before deserialization
Rate limiting
allImplement rate limiting on endpoints that accept data for deserialization
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems from untrusted networks
- Deploy WAF rules to block suspicious payload patterns and size anomalies
🔍 How to Verify
Check if Vulnerable:
Check Apache Fory version in your application dependencies or package managerCheck Version:
Check your dependency management file (pom.xml, package.json, etc.) or run: grep -i 'fory' your-dependency-fileVerify Fix Applied:
Verify Apache Fory version is 0.12.2 or later and test with normal payloads📡 Detection & Monitoring
Log Indicators:
- Unusually high CPU usage spikes
- Increased error rates in deserialization functions
- Large incoming payload sizes
Network Indicators:
- Multiple large payloads from single source IPs
- Abnormal request patterns to deserialization endpoints
SIEM Query:
source="apache_logs" AND (uri="*deserialize*" OR uri="*process*") AND bytes > 1000000