CVE-2025-2759
📋 TL;DR
This CVE-2025-2759 vulnerability in GStreamer's installer allows local attackers to escalate privileges by exploiting incorrect folder permissions. Attackers need initial low-privileged access to execute code that can then gain higher privileges. Systems with vulnerable GStreamer installations are affected.
💻 Affected Systems
- GStreamer
📦 What is this software?
Gstreamer by Gstreamer Project
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains full system control, installs persistent malware, accesses sensitive data, and compromises the entire system.
Likely Case
Local user or malware with initial access escalates to administrator/root privileges to install additional payloads or maintain persistence.
If Mitigated
With proper access controls and monitoring, exploitation attempts are detected and contained before privilege escalation completes.
🎯 Exploit Status
Requires local access and ability to execute code. The permission misconfiguration makes exploitation straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GStreamer security advisory for specific patched version
Vendor Advisory: https://gstreamer.freedesktop.org/security/
Restart Required: No
Instructions:
1. Check current GStreamer version. 2. Visit GStreamer security advisory page. 3. Download and install the latest patched version. 4. Verify installation permissions are correct.
🔧 Temporary Workarounds
Manual Permission Correction
linuxManually set correct permissions on GStreamer installation folders to prevent privilege escalation
chmod 755 /usr/lib/gstreamer-1.0
chmod 755 /usr/local/lib/gstreamer-1.0
chown root:root /usr/lib/gstreamer-1.0
Restrict Local User Privileges
allImplement least privilege access controls to limit initial attack surface
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges and prevent code execution
- Monitor for suspicious privilege escalation attempts and file permission changes
🔍 How to Verify
Check if Vulnerable:
Check GStreamer version and review folder permissions in installation directory for insecure settingsCheck Version:
gst-launch-1.0 --versionVerify Fix Applied:
Verify GStreamer is updated to patched version and installation folders have correct permissions (not world-writable)📡 Detection & Monitoring
Log Indicators:
- Unexpected permission changes to GStreamer directories
- Processes spawning with elevated privileges from GStreamer paths
- Failed privilege escalation attempts
Network Indicators:
- None - this is a local privilege escalation vulnerability
SIEM Query:
Process creation where parent process is in GStreamer directory AND privilege level changes