CVE-2025-29497
📋 TL;DR
CVE-2025-29497 is a memory leak vulnerability in libming v0.4.8's parseSWF_MORPHFILLSTYLES function that allows attackers to cause denial of service through resource exhaustion. This affects applications that process SWF files using the vulnerable libming library. Developers and systems using libming for SWF file manipulation are primarily affected.
💻 Affected Systems
- libming
📦 What is this software?
Libming by Libming
⚠️ Risk & Real-World Impact
Worst Case
Complete system resource exhaustion leading to denial of service, potentially crashing applications or systems processing malicious SWF files.
Likely Case
Application instability or crashes when processing specially crafted SWF files, resulting in service disruption.
If Mitigated
Minimal impact with proper input validation and resource monitoring in place.
🎯 Exploit Status
Proof of concept available in GitHub repository. Exploitation requires feeding a malicious SWF file to vulnerable applications.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check libming repository for latest version > v0.4.8
Vendor Advisory: https://github.com/libming/libming/issues/330
Restart Required: Yes
Instructions:
1. Check current libming version
2. Update to latest libming version from official repository
3. Recompile applications using libming
4. Restart affected services
🔧 Temporary Workarounds
Input Validation
allImplement strict validation of SWF files before processing with libming
Resource Limits
linuxSet memory limits on processes using libming to prevent complete resource exhaustion
ulimit -v [LIMIT] # Linux memory limit
Set-ProcessMitigation -Name process.exe -Enable ProcessMemoryLimit -MemoryLimit [BYTES] # Windows
🧯 If You Can't Patch
- Implement strict file upload restrictions for SWF files
- Deploy monitoring for abnormal memory consumption in libming processes
🔍 How to Verify
Check if Vulnerable:
Check if libming v0.4.8 is installed and being used by applicationsCheck Version:
ming-config --version or check library files for version informationVerify Fix Applied:
Verify libming version is updated beyond v0.4.8 and test with known malicious SWF files📡 Detection & Monitoring
Log Indicators:
- Abnormal memory consumption patterns
- Application crashes when processing SWF files
- Repeated failed SWF parsing attempts
Network Indicators:
- Unusual SWF file uploads to web applications
- Multiple SWF processing requests from single sources
SIEM Query:
source="application.log" AND ("libming" OR "SWF") AND ("crash" OR "memory" OR "out of memory")