CVE-2017-2750
📋 TL;DR
CVE-2017-2750 is a critical vulnerability in HP printer firmware that allows attackers to bypass digital signature validation and execute arbitrary code. This affects multiple HP LaserJet, PageWide, and OfficeJet Enterprise printer models. Attackers can potentially take full control of affected printers.
💻 Affected Systems
- HP LaserJet Enterprise printers
- HP PageWide Enterprise printers
- HP LaserJet Managed printers
- HP OfficeJet Enterprise printers
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of printer with persistent malware installation, data exfiltration, and use as pivot point into corporate networks.
Likely Case
Printer compromise leading to denial of service, unauthorized access to printed documents, and network reconnaissance.
If Mitigated
Limited impact with network segmentation and updated firmware preventing successful exploitation.
🎯 Exploit Status
Exploitation requires network access to printer management interface. Public exploit details exist in security advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware versions 2308937_578479, 2405087_018548 or later
Vendor Advisory: https://support.hp.com/us-en/document/c05839270
Restart Required: Yes
Instructions:
1. Identify printer model and current firmware version. 2. Download appropriate firmware update from HP support site. 3. Upload firmware to printer via web interface or HP tools. 4. Apply update and restart printer.
🔧 Temporary Workarounds
Network Segmentation
allIsolate printers on separate VLAN with restricted access
Disable Remote Management
allTurn off unnecessary network services on printers
🧯 If You Can't Patch
- Segment printers on isolated network with strict firewall rules
- Disable all unnecessary services and protocols on printers
🔍 How to Verify
Check if Vulnerable:
Check printer firmware version via web interface or HP tools against vulnerable version listCheck Version:
Access printer web interface at http://[printer-ip] and check firmware version in settingsVerify Fix Applied:
Confirm firmware version is 2308937_578479, 2405087_018548 or later📡 Detection & Monitoring
Log Indicators:
- Unusual firmware update attempts
- Unauthorized configuration changes
- Unexpected network connections from printer
Network Indicators:
- Unexpected traffic to/from printer management ports
- Firmware upload attempts from unauthorized sources
SIEM Query:
source="printer_logs" AND (event="firmware_update" OR event="config_change")