CVE-2024-30279
📋 TL;DR
CVE-2024-30279 is an out-of-bounds write vulnerability in Adobe Acrobat Reader that could allow arbitrary code execution when a user opens a malicious PDF file. This affects users of Acrobat Reader versions 20.005.30574, 24.002.20736 and earlier. Successful exploitation requires user interaction but could lead to complete system compromise.
💻 Affected Systems
- Adobe Acrobat Reader DC
- Adobe Acrobat Reader
📦 What is this software?
Acrobat by Adobe
Acrobat by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the victim's computer, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Malicious actors deliver targeted phishing emails with malicious PDF attachments, compromising individual workstations to steal credentials or deploy malware.
If Mitigated
Limited impact with proper security controls like application sandboxing, least privilege user accounts, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file). No public exploit code is currently available, but the vulnerability type suggests reliable exploitation is possible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.005.30575 and 24.002.20737
Vendor Advisory: https://helpx.adobe.com/security/products/acrobat/apsb24-29.html
Restart Required: Yes
Instructions:
1. Open Adobe Acrobat Reader. 2. Go to Help > Check for Updates. 3. Follow prompts to install available updates. 4. Restart the application when prompted.
🔧 Temporary Workarounds
Disable JavaScript in Adobe Reader
allPrevents JavaScript-based exploitation vectors that might be used to trigger the vulnerability
Edit > Preferences > JavaScript > Uncheck 'Enable Acrobat JavaScript'
Use Protected View
allOpen PDFs in Protected View mode to restrict potentially malicious actions
File > Open > Check 'Open in Protected View' or use default Protected View settings
🧯 If You Can't Patch
- Block PDF files at email gateways and web proxies
- Implement application whitelisting to prevent unauthorized PDF readers
🔍 How to Verify
Check if Vulnerable:
Check Adobe Reader version in Help > About Adobe Acrobat Reader DCCheck Version:
Windows: "C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" /? | find "Version"Verify Fix Applied:
Verify version is 20.005.30575 or higher for continuous track, or 24.002.20737 or higher for classic track📡 Detection & Monitoring
Log Indicators:
- Adobe Reader crash logs with memory access violations
- Windows Event Logs showing application crashes (Event ID 1000)
Network Indicators:
- Unusual outbound connections from Adobe Reader process
- PDF downloads from suspicious sources
SIEM Query:
source="*acrobat*" AND (event_id=1000 OR "access violation" OR "out of bounds")