CVE-2025-47219
📋 TL;DR
This vulnerability in GStreamer's isomp4 plugin allows heap buffer over-read when parsing malicious MP4 files, potentially exposing sensitive memory contents. It affects applications using GStreamer for media processing, such as media players, video editors, and web services handling MP4 uploads.
💻 Affected Systems
- GStreamer
📦 What is this software?
Gstreamer by Gstreamer Project
⚠️ Risk & Real-World Impact
Worst Case
Exploitation could lead to information disclosure of sensitive data from memory, including credentials or private keys, and might enable further attacks like remote code execution if combined with other vulnerabilities.
Likely Case
Most probable impact is application crashes (denial of service) or limited information leakage from memory, depending on the MP4 file content and system configuration.
If Mitigated
With proper controls like input validation and sandboxing, impact is reduced to minimal information disclosure or crashes without data loss.
🎯 Exploit Status
Exploitation requires crafting a malicious MP4 file; no public proof-of-concept is known, but the vulnerability is unauthenticated and could be triggered via file uploads or media streams.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.26.2 or later
Vendor Advisory: https://gstreamer.freedesktop.org/security/
Restart Required: Yes
Instructions:
1. Update GStreamer to version 1.26.2 or higher using your package manager. 2. For Linux: Use 'sudo apt update && sudo apt upgrade gstreamer1.0' (Debian/Ubuntu) or 'sudo yum update gstreamer' (RHEL/CentOS). 3. Restart any applications using GStreamer.
🔧 Temporary Workarounds
Disable isomp4 plugin
linuxTemporarily disable the vulnerable plugin to prevent MP4 parsing.
gst-inspect-1.0 --plugin-filters name=isomp4
sudo mv /usr/lib/gstreamer-1.0/libgstisomp4.so /usr/lib/gstreamer-1.0/libgstisomp4.so.disabled
Input validation for MP4 files
allImplement strict validation or sanitization of MP4 files before processing.
🧯 If You Can't Patch
- Restrict MP4 file processing to trusted sources only.
- Use application sandboxing or containerization to limit potential memory exposure.
🔍 How to Verify
Check if Vulnerable:
Check GStreamer version with 'gst-inspect-1.0 --version'; if version is 1.26.1 or earlier, it is vulnerable.Check Version:
gst-inspect-1.0 --versionVerify Fix Applied:
After update, confirm version is 1.26.2 or later with 'gst-inspect-1.0 --version'.📡 Detection & Monitoring
Log Indicators:
- Application crashes or errors related to GStreamer or MP4 parsing in system logs (e.g., /var/log/syslog).
Network Indicators:
- Unusual MP4 file uploads or media streams to vulnerable services.
SIEM Query:
Example: 'source="syslog" AND ("GStreamer" OR "isomp4") AND ("crash" OR "error")'