CVE-2022-44518
📋 TL;DR
CVE-2022-44518 is a use-after-free vulnerability in Adobe Acrobat Reader DC that could allow an attacker to execute arbitrary code on a victim's system. The vulnerability affects multiple versions of Acrobat Reader DC and requires user interaction (opening a malicious PDF file) to be exploited. Successful exploitation would give the attacker the same privileges as the current user.
💻 Affected Systems
- Adobe Acrobat Reader DC
📦 What is this software?
Acrobat by Adobe
Acrobat by Adobe
Acrobat by Adobe
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution leading to malware installation, data exfiltration, or system disruption.
If Mitigated
No impact if patched or if users avoid opening untrusted PDF files.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). No public exploit code available at disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 22.001.20085 (and later), 20.005.30314 (and later), 17.012.30206 (and later)
Vendor Advisory: https://helpx.adobe.com/security/products/acrobat/apsb22-16.html
Restart Required: Yes
Instructions:
1. Open Adobe Acrobat Reader DC. 2. Go to Help > Check for Updates. 3. Follow prompts to install available updates. 4. Restart the application.
🔧 Temporary Workarounds
Disable JavaScript in Adobe Reader
allPrevents JavaScript execution which may be used in exploitation chain
Edit > Preferences > JavaScript > Uncheck 'Enable Acrobat JavaScript'
Use Protected View
allOpen untrusted PDFs in Protected View mode
File > Open > Select 'Protected View' option when opening untrusted files
🧯 If You Can't Patch
- Restrict PDF file opening to trusted sources only
- Implement application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Adobe Reader version against affected versions listCheck Version:
Help > About Adobe Acrobat Reader DCVerify Fix Applied:
Verify version is updated to patched versions: 22.001.20085+, 20.005.30314+, or 17.012.30206+📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of AcroRd32.exe
- Suspicious child processes spawned from Adobe Reader
Network Indicators:
- Unexpected outbound connections from Adobe Reader process
SIEM Query:
Process creation where parent process contains 'AcroRd32' or 'Acrobat' and child process is suspicious