CVE-2024-7254
📋 TL;DR
This vulnerability allows attackers to cause a stack overflow by sending malicious Protocol Buffers data with deeply nested groups, potentially crashing applications. It affects any system using Google Protocol Buffers libraries to parse untrusted data. The impact is denial of service through application crashes.
💻 Affected Systems
- Google Protocol Buffers (protobuf)
- Any software using protobuf libraries
📦 What is this software?
Bluexp by Netapp
Protobuf by Google
Protobuf by Google
Protobuf by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash leading to denial of service, potentially affecting availability of critical services.
Likely Case
Application crashes or becomes unresponsive when processing malicious Protocol Buffers data, causing service disruption.
If Mitigated
Limited impact with proper input validation and resource limits in place.
🎯 Exploit Status
Exploitation requires sending specially crafted Protocol Buffers data to vulnerable parsers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Protocol Buffers with commit cc8b3483a5584b3301e3d43d17eb59704857ffaa or later
Vendor Advisory: https://github.com/protocolbuffers/protobuf/commit/cc8b3483a5584b3301e3d43d17eb59704857ffaa
Restart Required: Yes
Instructions:
1. Update Protocol Buffers library to version containing fix commit cc8b3483a5584b3301e3d43d17eb59704857ffaa
2. Rebuild and redeploy applications using the library
3. Restart affected services
🔧 Temporary Workarounds
Input validation and limits
allImplement depth limits and validation for Protocol Buffers parsing
Network filtering
allBlock or limit Protocol Buffers traffic from untrusted sources
🧯 If You Can't Patch
- Implement strict input validation to reject deeply nested Protocol Buffers structures
- Deploy rate limiting and monitoring for Protocol Buffers parsing operations
🔍 How to Verify
Check if Vulnerable:
Check Protocol Buffers library version and verify if it contains commit cc8b3483a5584b3301e3d43d17eb59704857ffaaCheck Version:
Check build/version information of Protocol Buffers library in your applicationVerify Fix Applied:
Verify the library version includes the fix commit and test with sample nested Protocol Buffers data📡 Detection & Monitoring
Log Indicators:
- Application crashes or stack overflow errors
- High memory/CPU usage during Protocol Buffers parsing
Network Indicators:
- Unusually large or complex Protocol Buffers messages
- Repeated Protocol Buffers requests causing service degradation
SIEM Query:
search for 'stack overflow', 'protobuf', 'parsing error' in application logs