CVE-2025-2268
📋 TL;DR
This vulnerability allows attackers to cause denial of service on HP LaserJet MFP M232-M237 printers by sending specially crafted IPP requests. Organizations using these printers in their network are affected, potentially disrupting printing services.
💻 Affected Systems
- HP LaserJet MFP M232-M237 Printer Series
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Printer becomes completely unresponsive, requiring physical power cycle to restore functionality, disrupting all printing operations.
Likely Case
Temporary printer unavailability requiring manual intervention to restart the device.
If Mitigated
Minimal impact with proper network segmentation and access controls limiting IPP exposure.
🎯 Exploit Status
Exploitation requires sending a specially crafted IPP request to the printer's IPP service (typically port 631).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version with fix as specified in HP advisory
Vendor Advisory: https://support.hp.com/us-en/document/ish_12114154-12114176-16/hpsbpi04013
Restart Required: Yes
Instructions:
1. Visit HP support website. 2. Download latest firmware for your specific printer model. 3. Upload firmware via printer web interface or HP tools. 4. Reboot printer after installation.
🔧 Temporary Workarounds
Disable IPP Service
allDisable Internet Printing Protocol service on affected printers
Network Segmentation
allIsolate printers on separate VLAN with restricted access to IPP port 631
🧯 If You Can't Patch
- Implement strict network access controls to limit IPP access to trusted hosts only
- Monitor printer availability and have procedures for manual restart if DoS occurs
🔍 How to Verify
Check if Vulnerable:
Check current firmware version via printer web interface or control panel and compare with patched version in HP advisoryCheck Version:
Access printer web interface at http://[printer-ip] and navigate to Information > Product InformationVerify Fix Applied:
Verify firmware version matches or exceeds the patched version specified in HP advisory📡 Detection & Monitoring
Log Indicators:
- Printer logs showing service crashes or restarts
- Unusual IPP request patterns in network logs
Network Indicators:
- Multiple malformed IPP requests to port 631
- Sudden cessation of normal printer network traffic
SIEM Query:
source_ip:* dest_port:631 AND (http_method:POST OR protocol:IPP) AND size_bytes:[threshold]