CVE-2023-1709
📋 TL;DR
This vulnerability in Datalogics Library APDFL allows attackers to trigger a stack-based buffer overflow by providing documents with corrupted fonts. This could lead to application crashes or potentially remote code execution. Organizations using affected versions of this PDF library are at risk.
💻 Affected Systems
- Datalogics Library APDFL
📦 What is this software?
Jt2go by Siemens
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crash causing denial of service and potential data loss in document processing workflows.
If Mitigated
Controlled crash with no data loss if proper input validation and memory protections are in place.
🎯 Exploit Status
Exploitation requires crafting malicious PDF documents with corrupted fonts. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v18.0.4PlusP1f or later
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-629917.html
Restart Required: Yes
Instructions:
1. Identify applications using Datalogics Library APDFL
2. Obtain updated library version from vendor
3. Replace vulnerable library files
4. Restart affected applications/services
5. Test document processing functionality
🔧 Temporary Workarounds
Input Validation Filter
allImplement PDF file validation before processing to reject suspicious documents
Memory Protection
allEnable ASLR and DEP/Stack Canaries if supported by platform
🧯 If You Can't Patch
- Isolate PDF processing systems in segmented network zones
- Implement strict file upload controls and sandbox document processing
🔍 How to Verify
Check if Vulnerable:
Check library version in application dependencies or vendor documentationCheck Version:
Check application documentation or contact vendor for version verification methodVerify Fix Applied:
Verify library version is v18.0.4PlusP1f or later and test with known safe PDFs📡 Detection & Monitoring
Log Indicators:
- Application crashes during PDF processing
- Memory access violation errors
- Unexpected process termination
Network Indicators:
- Unusual PDF file uploads to document processing systems
- Multiple failed document processing attempts
SIEM Query:
source="application_logs" AND ("crash" OR "buffer overflow" OR "access violation") AND process="*pdf*"🔗 References
- https://cert-portal.siemens.com/productcert/html/ssa-629917.html
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-11
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-164-01
- https://cert-portal.siemens.com/productcert/html/ssa-629917.html
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-11
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-164-01
