CVE-2025-25872

5.5 MEDIUM

📋 TL;DR

A privilege escalation vulnerability in Open Panel v0.3.4 allows remote attackers to gain elevated privileges through the Fix Permissions function. This affects systems running the vulnerable version of Open Panel, potentially allowing attackers to compromise administrative control.

💻 Affected Systems

Products:
  • Open Panel
Versions: v0.3.4
Operating Systems: Linux
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects Open Panel installations with the vulnerable version; other systems are not impacted.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise with administrative privileges, allowing data theft, service disruption, or installation of persistent backdoors.

🟠

Likely Case

Unauthorized administrative access to the Open Panel interface, enabling configuration changes, user management, and potential lateral movement.

🟢

If Mitigated

Limited impact if proper network segmentation and least privilege principles are implemented, restricting the attacker's ability to move beyond the panel.

🌐 Internet-Facing: HIGH - Remote exploitation capability makes internet-facing instances particularly vulnerable to attack.
🏢 Internal Only: MEDIUM - Internal attackers or compromised internal systems could exploit this to escalate privileges within the network.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploit details are publicly available on Packet Storm, suggesting weaponization is likely. Authentication is required to access the vulnerable function.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: v0.3.5

Vendor Advisory: https://openpanel.com/docs/changelog/0.3.5/#%EF%B8%8F-security-fixes

Restart Required: Yes

Instructions:

1. Backup current configuration. 2. Download Open Panel v0.3.5 from official sources. 3. Stop Open Panel service. 4. Replace installation with v0.3.5. 5. Restart Open Panel service. 6. Verify functionality.

🔧 Temporary Workarounds

Disable Fix Permissions Function

linux

Temporarily disable or restrict access to the vulnerable Fix Permissions function until patching can be completed.

# Edit Open Panel configuration to remove/disable Fix Permissions feature
# Consult Open Panel documentation for specific configuration options

Network Access Control

linux

Restrict network access to Open Panel administration interface to trusted IP addresses only.

# Example using iptables: iptables -A INPUT -p tcp --dport [OPEN_PANEL_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [OPEN_PANEL_PORT] -j DROP

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate Open Panel from critical systems
  • Enable detailed logging and monitoring for privilege escalation attempts

🔍 How to Verify

Check if Vulnerable:

Check Open Panel version: grep 'version' /path/to/openpanel/config or check web interface. If version is 0.3.4, system is vulnerable.

Check Version:

grep -i version /opt/openpanel/config/settings.conf || openpanel --version

Verify Fix Applied:

After updating, verify version shows 0.3.5 and test that Fix Permissions function no longer allows privilege escalation.

📡 Detection & Monitoring

Log Indicators:

  • Unusual privilege escalation attempts via Fix Permissions function
  • Multiple failed then successful authentication attempts followed by permission changes

Network Indicators:

  • Unusual traffic patterns to Open Panel administration interface from unexpected sources

SIEM Query:

source="openpanel.log" AND ("Fix Permissions" OR "privilege escalation")

🔗 References

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