CVE-2019-10627
📋 TL;DR
This CVE describes an integer overflow vulnerability in PostScript/PDF image handling code that leads to buffer overflow. It affects PostScript and PDF printers using IPS versions before 2019.2. Attackers could exploit this to execute arbitrary code or cause denial of service.
💻 Affected Systems
- HP printers with PostScript/PDF support
- Qualcomm-based printers
- Other printers using IPS interpreter
📦 What is this software?
Ips by Qualcomm
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with SYSTEM/root privileges leading to complete system compromise, lateral movement, and persistent access.
Likely Case
Denial of service (printer/service crash) or limited code execution in printer context.
If Mitigated
Denial of service only if memory protections (ASLR/DEP) partially mitigate.
🎯 Exploit Status
Exploitation requires sending malicious PostScript/PDF files to vulnerable printers. No public exploit code known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: IPS 2019.2 or later
Vendor Advisory: https://support.hp.com/us-en/document/c06458150
Restart Required: Yes
Instructions:
1. Check printer firmware version. 2. Download IPS 2019.2+ firmware from HP/Qualcomm. 3. Apply firmware update via printer web interface or management tool. 4. Restart printer to complete installation.
🔧 Temporary Workarounds
Disable PostScript/PDF printing
allDisable vulnerable PostScript and PDF interpreters if not required.
Printer-specific: Disable PostScript/PDF via web interface or print server settings
Network segmentation
allIsolate printers to separate VLAN with restricted access.
Network switch: Configure VLANs and ACLs to restrict printer access
🧯 If You Can't Patch
- Implement strict network access controls to limit printer access to trusted hosts only.
- Monitor print queues for suspicious PostScript/PDF files and implement file type filtering.
🔍 How to Verify
Check if Vulnerable:
Check printer firmware version via web interface (typically http://printer-ip) or management console. Look for IPS version.Check Version:
Printer-specific: Use SNMP (snmpget -v2c -c public printer-ip 1.3.6.1.2.1.25.6.3.1.2) or check web interfaceVerify Fix Applied:
Confirm firmware version shows IPS 2019.2 or later after update.📡 Detection & Monitoring
Log Indicators:
- Printer crash logs
- Failed print jobs with PostScript/PDF errors
- Memory allocation failures in printer logs
Network Indicators:
- Unusual print job traffic to printers
- Large PostScript/PDF files sent to printers
SIEM Query:
source="printer_logs" AND ("crash" OR "memory" OR "PostScript error")