CVE-2025-26305
📋 TL;DR
A memory leak vulnerability in libming's SWF parser allows attackers to cause denial of service by submitting crafted SWF files. This affects systems using libming v0.4.8 to parse SWF content, potentially impacting web applications, media processing tools, or security scanners that handle SWF files.
💻 Affected Systems
- libming
📦 What is this software?
Libming by Libming
⚠️ Risk & Real-World Impact
Worst Case
Sustained exploitation could exhaust system memory, causing service crashes or system instability affecting availability of dependent applications.
Likely Case
Intermittent service degradation or crashes when processing malicious SWF files, requiring service restarts.
If Mitigated
Limited impact with proper input validation and memory monitoring; isolated crashes without system-wide effects.
🎯 Exploit Status
Requires crafting specific SWF files targeting the parseSWF_SOUNDINFO function. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for fix version
Vendor Advisory: https://github.com/libming/libming/issues/322
Restart Required: No
Instructions:
1. Monitor libming GitHub repository for patch release. 2. Update libming to patched version when available. 3. Recompile any applications using libming with updated library.
🔧 Temporary Workarounds
Disable SWF file processing
allBlock or reject SWF file uploads/processing in applications using libming
Implement file size limits
allLimit SWF file sizes to reduce memory consumption potential
🧯 If You Can't Patch
- Implement strict input validation for SWF files
- Monitor memory usage of processes using libming and restart if abnormal patterns detected
🔍 How to Verify
Check if Vulnerable:
Check if libming v0.4.8 is installed and used for SWF parsing: ldd /path/to/application | grep mingCheck Version:
strings /usr/lib/libming.so | grep 'libming version' or check package managerVerify Fix Applied:
Verify libming version is updated beyond v0.4.8 and test with known malicious SWF files📡 Detection & Monitoring
Log Indicators:
- Abnormal memory usage patterns
- Process crashes related to SWF processing
- Repeated failed SWF parsing attempts
Network Indicators:
- Unusual SWF file uploads to vulnerable endpoints
- Multiple SWF file submissions in short timeframes
SIEM Query:
Process:memory_usage > threshold AND Process:name contains 'libming' OR File:extension='swf' AND Event:outcome='failure'